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You purchase a bottle of water. On checking its pH, you find that it is not neutral, as you might have expected. Instead, it is slightly acidic. Why?
3.102 Classify the following compounds as acids or bases, weak or strong. (a) perchloric acid, (b) cesium hydroxide, (c) carbonic acid, H2CO3, (d) ethylamine, C2H5NH2
. Why do scientists tend to express the acidity of a solution in terms of its Ph, rather than in terms of the molarity of hydrogen ion present? How is pH defined mathematically?
Distinguish between an ionic compound and a molecular compound dissolved in water. Do all molecular compounds ionize when dissolved in water? Explain.
Explain the difference between a monoprotic acid, a diprotic acid, and a triprotic acid. Give an example of each.
Classify the solutions represented in Exercises 9.28 and 9.30 as acidic, basic, or neutral.
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