Question

calculate the molarity of NaOH in the solution prepared by dissolving its 4 gram in enough water to form 250 ml of solution

Answer 1

Molecular mass of NaOH = 40

Moles = 4/40 = 0.1

V= 0.25 L

Molarity= mole/volume

= 0.1/0.25

=0.4 M