Question

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.

Answer 1

Answer:

I think it is a nitric acid

Answer 2

Answer:

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.