Question

4gram of caustic soda molar mass=40 is dissolved in watch and solution is made to 200cm cube calculate the molarity of the solution

Answer 1

Mass of NaOH===4

Molar Mass of NaOH====40

volume of solution in liters=====0.2

Molarity=Number of moles of solute/volume of solution in litres

m=mass of NaOH/molar mass of NaOH/0.2

m=4/40/0.2

m=10/20

m=1/2=0.5m

Hope it will help you