Question

What is the molarity of `H_(2)SO_(4)` solution that has a density 1.84 g/c c at `35^(@)`C and contains 98% by weight?
A. `4.18M`
B. `8.14M`
C. `18.4M`
D. `18M`

Answer 1

Correct Answer - C
Molarity
`=("Wt. of solute")/("Mol. wt") xx (1000)/("Vol of solution"("in mL"))`
`= (98)/(98) xx (1000)/(54.34) = 18.4`
`("vol. of solution" = ("mass")/("density") = (100)/(1.84) = 54.34 mL)`