Many people are aware that pH has something to do with acids or bases and that it is important for things like water quality, food-making, aquatic life and plants, but not many really understand what it means. In simplest terms, a pH value indicates how acidic or basic water is. A pH...
7. This value is considered neutral—neither acidic or basic. Normal, clean rain has a pH value of between 5.0 and 5.5, which is slightly acidic. However, when rain combines with sulfur dioxide or nitrogen oxides—produced from power plants and automobiles—the rain becomes much more acidic....
正常雨水因溶解二氧化碳生成碳酸,pH约为5.6。酸雨因含有更多硫酸、硝酸等强酸,pH进一步降低。 - **A. more than 5.6**:错误,正常雨水pH为5.6,酸雨更酸。 - **B. less than 5.6**:正确,符合酸雨定义。 - **C. more than 6.5**:错误,远高于正常雨水pH。 - **D. less than 7**:虽酸性但范围过大,...
What acidic and basic substances do humans encounter in their everyday activities? Explain why you cannot test the effects of two parameters (like pH and temperature) simultaneously in the same experiment. What is meant by the term "gram-variable"?
The more readily it does this, the more acidic the chemical or functional group is. Every chemical has a unique pKa value (or set of pKa values if it can donate more than one proton). It’s important to remember that acidity is relative. If you take a weak acid such as acetic ...
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What is a PhD? A PhD is a globally recognized postgraduate academic degree awarded by universities and higher education institutions to a candidate who has submitted a thesis or dissertation, based on extensive and original research in their chosen field. The specificities of PhD degrees vary depen...
Oxides are compounds that have an oxygen atom (or more) in their chemical composition. As the name implies, acidic and basic oxides have those corresponding properties forming acids and bases, respectively, in aqueous solutions.Answer and Explanation: ...
Ranging from 0 to 14 on a measurement scale, a pH of 7 is neutral while anything above or below is considered basic and acidic, respectively. Substances that are either very basic or very acidic are considered corrosive, creating a characteristic hazardous waste. ...
The taste experience when something acidic is taken into the mouth Basicity (Slang) Unthinkingly or blandly conformist “Even someone who looks really indie … can be basic if they are simply imitating others rather than thinking for themselves” (Chelsea Rickling). Acidity PH values below 7 Bas...