Question
1. 5 ml of 8N HNO3 ,4.8 ml of 5N HCL and a certain volume of 7M H2SO4 are mixed together and made up to 2liter. 30 ml of this acid mixture exactly neutralizes 42.9 ml of Na2Co3 solution containing 1 gram of Na2Co3.10H2O in 100 ml of water calculate the volume of sulfuric acid used for making the solution