62.5 gm of a mixture of `CaCO_(3)` and `SiO_(2)` are treated with excess of HCl and 1.1 gm of `CO_(2)` is produced. What is mass % `CaCO_(3)` in the mixture.

2 gm of a mixture of CO and CO_(2) on reaction with excess of I_(2)O_(5) produced 2.54 gm of I_(2) . What will be the mass % of CO_(2) in the original mixture ?

If 20 g of CaCO_(3) is treated with 100 mL of 20% HCl solution, the amount of CO_(2) produced is

4 g of an impure sample of CaCO_(3) on treatment with excess HCl produces 0.88 g CO_(2) . What is per cent purity of CaCO_(3) sample?

2g of mixture of CaCO_(3) and MgCO_(3) on being treated with dilute HCl gives 536.84 mL of CO_(2) at 27^(@)C and 750 mm of Hg pressure. What is the composition of the mixture?

CaCO_(3) + 2HCl to CaCl_(2) + H_(2)O + CO_(2) 0.2 mole CaCO_(3) is reacted with excess of HCl. Find mass of CO_(2) produced?

If 20 g of CaCO_3 is treated with 100 mL of 20% HCl solution, the amount of CO_2 produced is