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Question:

What is the molarity of H2SO4 solution that has a density 1.84 gm/cc at 35℃ and contains solute 98?

18.4 M

18 M

4.18 M

8.14 M

Solution:

Molarity = (wt of solute / mol.wt) × (1000 / vol. of solution (in mL))
Volume of solution = mass / density = 100 / 1.84 = 54.34 mL
Now molarity = (98 / 98) × (1000 / 54.34) = 18.4 M
Hence, the correct option is 18.4 M