How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO_(3) solution ? The concentration of nitric acid is 70 % by mass.

How many grams of concentrated nitric acid solution should be used to

1.	How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO_(3) solution ? The concentration of nitric acid is 70 % by mass.
Answer» 54.0 g conc. `HNO_(3)` 45.0 g conc. `HNO_(3)` 90.0 g conc. `HNO_(3)` 70.0 g conc. `HNO_(3)` Solution :Molarity `= ("MASS of HNO"_(3))/("Molar mass " xx " volume of solution in L")` `("2.0 mol L"^(-1))=(W)/(("63 g mol"^(-1))xx("0.250 L"))` `W=("2.0 mol L"^(-1))xx("63 g mol"^(-1))xx("0.250 L")` `=31.5g` Actual mass of `HNO_(3)=31.5gxx(70)/(100)=45.0g`.