Answer to Question #134904 in General Chemistry for Nielle

Question

Bleach is an aqueous solution of sodium hypochlorite. What is the molarity of a solution that contains 20.5g of Sodium hypochlorite in 375mL? (NaClO)

Answer 1

Molar Mass  Sodium hypochlorite = 74.44 g / mol .

Moles of  Sodium hypochlorite

= mass of  Sodium hypochlorite / molar mass Sodium hypochlorite.

= 20.5 / 74.44

= 0.2753 moles .

 Molarity of a solution = Moles of  Sodium hypochlorite / Volume of Solution in liter .

= 0.2753 mol . / 0.375 liter

= 0.7343 M . Answer .