(a) A substance 'X' is used as a building material and is insoluble in water. When it reacts with dil. HCl,…
(a) A substance 'X' is used as a building material and is insoluble in water. When it reacts with dil. HCl, it produces a gas which turns lime water milky.
(i) Write the chemical name and formula of 'X'.
(ii) Write chemical equations for the chemical reactions involved in the above statements.
Solution
(a) (i) Chemical Name: Calcium Carbonate
Chemical formula: CaCO3
(ii) CaCO3 + 2HCl → CaCl2 + H2O + CO2 (up arrow)
Ca(OH)2 + CO2 → CaCO3 + H2O