Question

Example 1: Calculate the concentration of NaOH

made by dissolving 0.15mol of NaOH in 250 cm
of solution [Na=23,0=16, H=1].

Answer 1

2.4 %

Step-by-step explanation:

.15 mole * ( 23 + 16 + 1) gm / mole = 6 gm in solution

250 cm^3 of water solvent weighs 250 gm

6 gm / 250 gm = 2.4 %