Question

What is the amount of $H_{2}S{O}_4$ (in grams) present in $0.2$ moles of sulphuric acid?

• A. $17.5$ g
• B. $19.6$ g
• C. $20$ g
• D. $25$ g

Answer 1

The correct option is B $19.6$ g

Molar mass of $H_{2}S{O}_4=98$ g
As we know, Molecular weight of a substance $=1$ mole
Weight of a substance = Number of moles$\times$Molecular weight $=0.2\times 98=19.6$ g.