Question

When water is added gradually to a white solid X, a hissing sound is heard and a lot of heat is produced forming a product Y. A suspension of Y in water is applied to the walls of a house during white washing. A clear solution of Y is also used for testing carbon dioxide gas in the laboratory.
(a) What could be solid X? Write its chemical formula.
(b) What could be product Y? Write its chemical formula.
(c) What is the common name of the solution of Y which is used for testing carbon dioxide gas?
(d) Write chemical equation of the reaction which takes place on adding water to slid X.
(e) Which characteristic of chemical reactions is illustrated by this example?

Answer 1

Answer:

X is POP and Y is gypsum

Explanation:

Now you can solve it easily

Answer 2

Answer:

HERE IS YOUR ANSWER....................

Explanation:

   a) calcium carbonate

   b) calcium hydroxide

   c) it is denoted as lime water

   d) 2CaCO3 +2H2O = 2Ca(OH)2 + 2CO2

   E) it explains suspension forming ability of CaCO3