12.5 mL of a solution containing 6 g of a dibasic acid in one litre was found to be neutralized by 10 mL of a decinormal solution of NaOH. The molecular mass of the acid is :

12.5 mL of a solution containing 6 g of a dibasic acid in one litre wa

1.	12.5 mL of a solution containing 6 g of a dibasic acid in one litre was found to be neutralized by 10 mL of a decinormal solution of NaOH. The molecular mass of the acid is :
Answer» 110 75 120 150 Solution :`N_(1)V_(1) ("ACID")=N_(2)V_(2)("base")` `N_(1)xx12.5=(1)/(10)xx10` `N_(1)=(1)/(12.5)` STRENGTH `N=xx Ew` `6 = (1)/(12.5)xx Ew` Ew=75 MOLAR mass = Equivalent mass `xx` Basicity `=75xx2=150`