How many grams of conc.HNO3 should be used to prepare 250 ml of 2.0 M HNO3 ? The conc. Acid is 70% HNO3 (BY MASS)
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To prepare 250ml of 2M HNO3 , wt of conc sdlution required is as follows;
No of moles present in the above solution is 25o*2=500 mmoles=0.5 moles.0.5moles=0.5*63=31.5gms70%(W/V) means 70gms present in 100ml of conc solution.31.5gms of HNO3 contains in (100/70) *31.5 ml=45ml.Similar questions