Equation: Ca(HCO3)2 to CaCO3 (precipitate) + H2O + CO2 (in the presence of heat)
V = 200 cm3 = 0.2 dm3
C = 0.5 mol/dm3 = 0.5M
N = CV implies N = 0.5 × 0.2
= 0.1 mole
From the equation 1 mole of Ca(HCO3)2 gives 100g of CaCO3
(1 mole CaCO3 = 40 + 12 + (3 x 16) = 100g\)
0.1 mole of Ca(HCO3)2 gives x g of CaCO3.
10.10=100x
x=100×0.10=10g
