Question

What is the mass of hydrogen peroxide in 1 L of 3M solution?

• A. 10.2g
• B. 102 g
• C. 11.3 g
• D. 68 g

Answer 1

The correct option is B 102 g

Molar mass of $H_2{O}_2$=34, When 34 g of it are dissolved in 1L , molarity is 1
Hence mass of $H_2{O}_2$ in One Litre of $3M=34\times 3$ = 102 g