Question

35. Answer the following questions:
(1) State the reaction of sodium carbonate and sodium hydrogen carbonate with
dilute hydrochloric acid and write their balanced equations.
(2) Which products are obtained on passing carbon dioxide in less proportion and
in more proportion in solution of calcium hydroxide? State the solubility of
products in water.

Answer 1

Answer:

a. answer in image

b.Case 1.

when carbon dioxide is pass through lime water in less proportion then insoluble white precipitate (calcium carbonate) is formed.

Ca(OH)2 + CO2 = CaCO3 + H2O

CaCO3 is insoluble in water.

Case 2.

when carbon dioxide is pass through lime water in excess proportion then soluble calcium hydrogen carbonate is formed.

Ca(OH)2 + CO2 = CaHCO3 + H2O