Learn the pH of Common Chemicals

Learn the pH of Common Chemicals pH is a measure of how acidic or basic a chemical is when its in aqueous (water) solution. A neutral pH value (neither an acid nor a base) is 7. Substances with a pH greater than 7 up to 14 are considered bases. Chemicals with a pH lower than 7 down to 0 are considered acids. The closer the pH is to 0 or 14, the greater its acidity or basicity, respectively. Heres a list of the approximate pH of some common chemicals. Key Takeaways: pH of Common Chemicals pH is a measure of how acidic or basic an aqueous solution is. pH usually ranges from 0 (acidic) to 14 (basic). A pH value around 7 is considered neutral.pH is measured using pH paper or a pH meter.Most fruits, vegetables, and body fluids are acidic. While pure water is neutral, natural water may be either acidic or basic. Cleaners tend to be basic. pH of Common Acids Fruits and vegetables tend to be acidic. Citrus fruit, in particular, is acidic to the point where it can erode tooth enamel. Milk is often considered to be neutral, since its only slightly acidic. Milk becomes more acidic over time. The pH of urine and saliva is slightly acidic, around a pH of 6. Human skin, hair, and nails tends to have a pH around 5. 0 - Hydrochloric Acid (HCl)1.0 - Battery Acid (H2SO4 sulfuric acid) and stomach acid2.0 - Lemon Juice2.2 - Vinegar3.0 - Apples, Soda3.0 to 3.5 - Sauerkraut3.5 to 3.9 - Pickles4.0 - Wine and Beer4.5 - Tomatoes4.5 to 5.2 - Bananasaround 5.0 - Acid Rain5.0 - Black Coffee5.3 to 5.8 - Bread5.4 to 6.2 - Red Meat5.9 - Cheddar Cheese6.1 to 6.4 - Butter6.6 - Milk6.6 to 6.8 - Fish Neutral pH Chemicals Distilled water tends to be slightly acidic because of dissolved carbon dioxide and other gases. Pure water is nearly neutral, but rain water tends to be slightly acidic. Natural water rich in minerals tends to be alkaline or basic. 7.0 - Pure Water pH of Common Bases Many common cleaners are basic. Usually, these chemicals have very high pH. Blood is close to neutral, but is slightly basic. 7.0 to 10 - Shampoo7.4 - Human Blood7.4 - Human Tears7.8 - Eggaround 8 - Seawater8.3 - Baking Soda (Sodium Bicarbonate)around 9 - Toothpaste10.5 - Milk of Magnesia11.0 - Ammonia11.5 to 14 - Hair Straightening Chemicals12.4 - Lime (Calcium Hydroxide)13.0 - Lye14.0 - Sodium Hydroxide (NaOH) Other pH Values Soil pH ranges from 3 to 10. Most plants prefer a pH between 5.5 and 7.5. Stomach acid contains hydrochloric acid and other substances and has a pH value of 1.2. While pure water free of undissolved gases is neutral, not much else is. However, buffer solutions may be prepared to maintain a pH near 7. Dissolving table salt (sodium chloride) in water does not change its pH. How to Measure pH There are multiple ways to test the pH of substances. The simplest method is to use pH paper test strips. You can make these yourself using coffee filters and cabbage juice, use Litmus paper, or other test strips. The color of the test strips corresponds to a pH range. Because the color change depends on the type of indicator dye used to coat the paper, the result needs to be compared against a chart of standard. Another method is to draw a small sample of a substance and apply drops of pH indicator and observe the test change. Many home chemicals are natural pH indicators. pH test kits are available to test liquids. Usually these are designed for a particular application, like aquaria or swimming pools. pH test kits are fairly accurate, but may be affected by other chemicals in a sample. The most accurate method of measuring pH is using a pH meter. pH meters are more expensive than test papers or kits and require calibration, so they are generally used in schools and labs. Note About Safety Chemicals that have very low or very high pH are often corrosive and can produce chemical burns. Its fine to dilute these chemicals in pure water to test their pH. The value wont be changed, but the risk will be reduced. Sources Slessarev, E. W.; Lin, Y.; Bingham, N. L.; Johnson, J. E.; Dai, Y.; Schimel, J. P.; Chadwick, O. A. (November 2016). Water balance creates a threshold in soil pH at the global scale. Nature. 540 (7634): 567–569. doi:10.1038/nature20139

Corythosaurus - Facts and Figures

Corythosaurus - Facts and Figures Name: Corythosaurus (Greek for Corinthian-helmet lizard); pronounced core-ITH-oh-SORE-usHabitat: Forests and plains of North AmericaHistorical Period: Late Cretaceous (75 million years ago)Size and Weight: About 30 feet long and five tonsDiet: PlantsDistinguishing Characteristics: Large, bony crest on head; ground-hugging, quadrupedal posture About Corythosaurus As you can guess from its name, the most distinctive feature of the hadrosaur (duck-billed dinosaur) Corythosaurus was the prominent crest on its head, which looked a bit like the helmet worn by the ancient Greek soldiers of the city-state of Corinth. Unlike the case with distantly related bone-headed dinosaurs like Pachycephalosaurus, however, this crest probably evolved less to establish dominance in the herd, or the right to mate with females by head-butting other male dinosaurs, but rather for display and communication purposes. Corythosaurus wasnt native to Greece, but to the plains and woodlands of late Cretaceous North America, about 75 million years ago. In a spectacular bit of applied paleontology, researchers have created three-dimensional models of Corythosaurus hollow head crest and discovered that these structures create booming sounds when funneled with blasts of air. Its clear that this large, gentle dinosaur used its crest to signal (extremely loudly) to others of its kindthough we may never know whether these sounds were meant to broadcast sexual availability, keep the herd in check during migrations, or warn about the presence of hungry predators like Gorgosaurus. Most likely, communication was also the function of the even more ornate head crests of related hadrosaurs like Parasaurolophus and Charonosaurus. The type fossils of many dinosaurs (most notably the north African meat-eater Spinosaurus) were destroyed during World War II by Allied bombing raids on Germany; Corythosaurus is unique in that two of its fossils went belly-up during World War I. In 1916, an England-bound ship carrying various fossil remains excavated from Canadas Dinosaur Provincial Park was sunk by a German raider; to date, no one has attempted to salvage the wreckage.

Culture Essay Example | Topics and Well Written Essays - 250 words - 2

Culture - Essay Example In the early years, immigrants shared a common ethnic and religious profile: white, Anglo-Saxon, Protestant (McDonald & Balgopal, 1998). The first wave of European immigrants ‘melted’ into the mainstream American culture easily due to this similarity of the ethnic background. Israel Zangwill’s concept of America as a ‘melting pot,’ in which immigrants of diverse ethnicities assimilated into one homogenous cultural identity, pertains to this age. Present, second wave of immigrants is largely from the developing nations of Asia and Latin America. They bring with them a diversity of languages, customs, distinct physical traits, religions and ethnicity, which does not submit to easy assimilation. Today, â€Å"there is more emphasis on preserving ones ethnic identity, of finding ways to highlight and defend ones cultural roots† (Booth, 1998). America is now a multicultural ‘Mosaic,’ in which various groups preserve their ethnic identities and yet remain a part of the larger American way of life. The Chinese exemplify this ‘mosaic’. This group retains its ethnic identity and also makes significant contributions to the American culture. Steven Chu, Samuel C. C. Ting, and others are Nobel Prize winners. (â€Å"Chinese American Culture†, 2010). Amy Tan is one of today’s most popular American writers. Chinese take-away is as much a part of American cuisine as apple pie. The teachings of Confucius are part of the curriculum of many American universities. The benefits of Chinese meditation, green tea, and acupuncture are a part of American life. Chinese calligraphy, character tattoos, and martial arts have permeated American culture. In this age of immense diversity, American culture is no longer a ‘melting pot’ which blends all its composite groups into a homogenous whole. There is no single American identity. â€Å"Ethnicity

Fine Tuning Essay Example | Topics and Well Written Essays - 4750 words

Fine Tuning - Essay Example The key findings will demonstrate how ‘Accounting Ratios’ for August, ‘Analysis of History’ and ‘Recommendations’ on improving the situation can positively impact the company. It will have three main bodies such as Accounting Ratios, History, and Recommendations. The structure of the assignment envisages a main body, which will be divided into different sections based on the topic to be covered and each section will be arranged under a separate subheading. This way, it will become clear as to who is required to read the report. Activity 2 encompasses an analytical and in-depth research on accounting ratios for December. This has then been compared and contrasted with data pertaining to August. An analytical review of the history of trading from August-December has been conducted with the aid of graphs, tables and the relevant evidence has been shown by referring back to the graphs and tables. Subsequently, based on the recommendations endorsed in Activity 1, clear evidence is presented to show the effectiveness of the action plan was. This, again, will be divided into three main bodies including Accounting Ratios, History, and the evidence of successful Action Plan. An investigation of this nature will help the company to determine its current organisational and operational anomalies that have contributed to a fall in their profitability. An analysis of various accounting ratios spanning over several months, which is one of the aims of this study, will help them to identify problems that have contributed to this phenomenon. In addition, it will also enable them to pinpoint the source of the problems so that they can take appropriate measures to address them adequately. Therefore, this study envisages a thorough analysis of various financial statements of the company right from January to June by applying an analysis of various ratios. Once the relevant ratio analyses are undertaken

Religion and Evangelicalism in Jane Eyre Essay -- Jane Eyre Essays

Religion and Evangelicalism in Jane Eyre    When orphans of the nineteenth century were able to receive an education, it usually came from a charity instution. These charity institutions were founded on a basis of religion. This is the case in Jane Eyre for Mr. Brocklehurst is a clergyman who owns and overlooks the Institution that Jane became a part of. Jane's conversation with the newly met Helen Burns exposes this to the reader. Jane asks the question, "Who was Naomi Brocklehurst?" The reader finds out that she was the lady who built the new part of the Institution. It is her son, Mr. Brocklehurst who "overlooks and directs everything." At Lowood he "is the treasurer and manager of the establishment." It is also at this time that Jane finds out Mr. Brocklehurst is a clergyman (82; ch.5). The goal of charity schools was to teach religion and morals to orphans. Knowing this, and feeling as though Jane needs more moral and religious instruction, Mrs. Reed tells Mr. Brocklehurst that "this little girl has not quite the character and disposition I could wish: should you admit her into Lowood school, I should be glad if the superintendent and teachers were requested to keep a strict eye on her, and, above all, to guard against her worst fault, a tendency to deceit" (65; ch. 4). However, religious and moral teaching were secondary to grammar. Before the Elementary Act of 1870, religious instruction was limited to the beginning or the end of the school sessions (Curtis 386). This is true at Lowood. After the girls get up and wash, they go into a "dimly-lit schoolroom" and the prayers are read. Then, "Business now began: the day's Collect was repeated, certain texts of Scripture were said, and to these succeeded a protracted... ...d takes great care to be plain and dress neatly. Before she leaves her room, she checks to make sure that everything is neat and orderly. She is "still by nature solicitous to be neat" (130; ch. 11). After Mr. Rochester asks her to marry him, when he says that he will send for the family jewels, her relpy is, "No, no, sir! Think of other subjects, and speak of other things, and in another strain. Don't address me as if I were a beauty; I am your plain, Quakerish govnerness" (287; ch. 24). She cannot have jewels because it would upset her plainness and she would no longer look like that "plain, Quakerish" type of girl. Lowood had quite an impact on her life as it was sure to have had on the other children that went there. Works Cited: Bronte, Charlotte. Jane Eyre. London, Penguin Books Ltd.: 1996. (Edited with an Introduction and Notes by Michael Mason).

Jollibee Essay

Tony Tan Caktiong’s Jollibee has been one of the most admired, most copied, most innovative and most professionally-run company here in the Philippines. It has been the number one fastfood chain overtaking giants such as Mc Donalds and Kentucky Fried Chicken or KFC. How did a local jolly red bee knocked down a multinational red-haired clown named Ronald? Let’s see another inspiring story of the founder of one of my ideal businesses. With its success, a Jollibee franchise has now a tag price of P25+ Million (US$ 500,000+). Wow! Tony Tan Caktiong’s Life and his Jollibee company is another rags to riches story of an entrepreneur that truly inspires everyone. Tony was the third of seven siblings born to poor parents who migrated from the Fujian province in China to look for a better life here in the Philippines. Tony to return back to Manila and pursue his course Chemical Engineering at the University of Santo Tomas (UST). In 1975, Tony and his colleagues went on a visit to a Magnolia Ice Cream plant located in Quezon City and learned that it was offering franchise when he saw a poster for it. By the month of May, with his family savings, he took P350,000 to grab the franchise opportunity and opened two Magnolia ice cream parlors named Cubao Ice Cream House. They all worked hands-on but as the business propels, they noticed they could not do it all so they started to set up an organization hired store managers, and trained people. Tony started with just two ice cream. Then after two years, he offered chicken and hamburger sandwiches, because customers were telling them they didn’t want to be eating ice cream all the time. They prepared the food in the back kitchen, and soon noticed that people were lining up more for hamburgers than for ice cream. Then in 1978, when they already had six ice cream parlors, they asked themselves: â€Å"Why don’t we change into a hamburger house?† That was also the time they decided to incorporate and realized they needed a brand name. They were looking for a symbol that would represent the group, and because Tony was very impressed with Disneyland characters, they decided on a bee. The bee is a busy creature that produces honey – one of life’s sweetest things. They thought it would be a very good symbol to represent everybody. They decided they would all be very busy and happy at the same time, because if they were busy but not happy, it would not be worth it. That’s why they put the word jolly and just changed the â€Å"y† into â€Å"i† to form a brand name – JOLLIBEE. â€Å"It wasn’t long before we heard that the multinationals were coming in – including McDonald’s. Friends started asking us if we were going to get a McDonald’s franchise but I remember saying, if you franchise, you can’t grow outside the Philippines†, says Tony.

To What Extent Can quot;waverleyquot; Be Called an...

When asked whether Waverley is an anti-Romantic novel, one must first fully understand the term Romantic and then discuss whether the characteristics of this expression are at all reflected within Waverley. One must take into consideration the historical and political conditions within society at the time and their influence on this great writer and his works. The Romantic period occurred some time from 1789 to 1832. It was a dramatic turning point in literary history as it was considered a movement away from classical traditions and provincial languages within the field of literature which had been safe yet restricting for the authors of the time. Through the portrayals within poetry of nature and controversial subjects such†¦show more content†¦Scott used this to pose questions about historical focus, evolution in literature, public thinking and social opinions at the time. This is why one must understand the historical events taking place and the consequent changes of opinion and approaches to society. It is suggested that the novel Waverley revisits past pieces of Scottish literature, therefore maintaining an awareness of historical relevance. By doing this Scott is able to use the past as a setting for his writings and while doing so, he is able to reflect upon the time that Waverley was written and the proceeding eras. He was therefore able to explore history and develop an understanding of the ideology and social expectations of the time. This influential Novel was set in the Jacobite revolution in 1745, in which class clashes had begun to form between those who wished the Stewards and their society to remain and those who wanted change. This affected the message of the novel greatly. The early chapters of the novel show how, despite family allegiance Edward maintains the Tory identity and reflects steward loyalist. These political events within the novel reveal the ideological and historical importances within the rebellion, which would shape the nation and therefore future literature. Scott used complex ideological dynamics to create a tension within this novel, comparing issues within these eras, national interests and the characters