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30 July, 00:22

A and B are powders, A is insoluble while B dissolves to give a pH 3 solution. Mixing A and B gives bubbles or effervescence and a clear solution.

a) which is the acid?

b) if the other substance is a carbonate, name the gas given off.

c) even though A is insoluble a clear solution is given off, explain why.

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Answers (2)
  1. 30 July, 01:14
    0
    I think it is a nitric acid
  2. 30 July, 02:38
    0
    a) B is an acid

    b) carbon dioxide

    c) it is salt of the acid

    Explanation:

    a) B dissolves to produce an acid. An acid, according to the Bronsted-Lowry theory, dissolves in an solution to give an acid solution of a pH less than 7 on a pH scale.

    b) carbonates gives a gaseous effervescence. The gas given off is carbon dioxide

    c) The solution is a salt of an acid. This is in an aqueous solution.
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