Question

Calculate the number of miles of calcium chloride that can be obtained from 25g of limestone in the presence of excess hydrogen chloride

Answer 1

CaCO₃+2HCl=CaCl₂+H₂CO₃

n (CaCO₃) = n (CaCl₂)

m (CaCO₃)=25 g

M (CaCO₃)=100.1 g/mol

n (CaCO₃)=m/M = 25/100.1 = 0.25 mol

n (CaCl₂)=n (CaCO₃) = 0.25 mol