Solution:
Gram equivalent of Na2CO3 = Gram equivalent of HCl
Wt of Na2CO3 = 10.6
GEW of Na2CO3 = 53g
Volume of HCl = 200ml
Ma = 1M
Molarity of HCl = 1M
Molarity of 200 ml of HCl solution which can neutralise 10.6 g. of anhydrous Na2CO3 is
Gram equivalent of Na2CO3 = Gram equivalent of HCl
Wt of Na2CO3 = 10.6
GEW of Na2CO3 = 53g
Volume of HCl = 200ml
Ma = 1M
Molarity of HCl = 1M