1.

How many grams of concentrated nitric acid solution should be used to prepare250 mL of 2.0M HNO_(3) ? The concentrated acid is 70% HNO_(3)

Answer»

`90.0` G conc. `HNO_(3)`
`70.0` g conc. `HNO_(3)`
`54.0` g conc. `HNO_(3)`
`45.0` g conc. `HNO_(3)`

SOLUTION :Molarity `(M) =(wt xx 1000)/( " mol . Wt x col (ml))`
`2= (wt)/(63) GM`
wt. of `70%` acid `=(100)/( 70) xx 31.5 =45` gm


Discussion

No Comment Found

Related InterviewSolutions