Differentiate between the following pairs based on the criteria given:

(a) Sulphuric acid and Nitric acid (using barium chloride solution)

(b) Unsaturated and Saturated hydrocarbons (type of bond present)

Calcium carbonate reacts with dilute hydrochloric acid as given below:

CaCO₃ + 2HCl ⟶ CaCl₂ + H₂O + CO₂

(a) What is the mass of 5 moles of calcium carbonate? (Relative molecular mass of calcium carbonate is 100)

(b) How many moles of HCl will react with 5 moles of calcium carbonate?

(c) What is the volume of carbon dioxide liberated at S.T.P. at the same time?