Question

Concentrated nitric acid used in the laboratory work is `68%` nitric acid by mass in aqueous solution. What should be the molaritiy of such a sample of the acid if the density of solution is `1.504 g mL^(-1)`?
A. `15.23`
B. `16.24`
C. `12.14`
D. `26.3`

Answer 1

Correct Answer - B
`100gHNO_(3)" solution "=68gHNO_(3)=1.08mol`
`:."Molarity"=("mole")/("volume in liter")=(1.08xx1000)/((100/1.504))=16.243M`