A solution of Hydrogen Peroxide contains 6.8 gram H²O²/100ml. Find the Molarity of this Substance

Question

A solution of Hydrogen Peroxide contains 6.8 gram H₂O₂/100ml. Find the Molarity of this Substance

Answer 1

Given :

6.8 g H₂O₂ in 100 mL water = 68 g H₂O₂ in 1 liter water.

Molar Mass of H₂O₂ = 34 g/mol. 

We know that 

Molarity = Number of moles of solute / Volume of Solution in L

Molarity = 68 g/34 g/mol = 2 mol in 1 liter = 2M.

Hence, Molarity = 2M