Question

What is the molarity of naoh solution if 100 ml of solution contains 1 g of naoh? (1) 0.50 m (2) 0.30 m (3) 0.65 m (4) 0.25 m?

Answer 1

Mass of NaOH = 1g

Moles of NaOH = Given mass/Molar mass = 1/40 = 0.025 mol

Volume of solution = 100ml = 0.1L

Molarity of solution = no. of moles of NaOH/Volume of solution in L = 0.025/0.1 = 0.25 mol/L

option 4) is correct