Calculate the molarity of a solution prepared by dissolving its 4g NaOH in enough water to form 250mL of the solution.

Calculate the molarity of a solution prepared by dissolving its 4g NaO

1.	Calculate the molarity of a solution prepared by dissolving its 4g NaOH in enough water to form 250mL of the solution.
Answer» Solution :Since molarity (M) `=("NUMBER of MOLES of solute(n)")/("Volume of solution in litres (v)")` `=n=w/(MW)=("WEIGHT")/("MOLECULAR weight")` `=(4g//40g)/(0.250L)=0.4"mol L"^(-1)=0.4M`