Question

a 0.25M solution of NaOH having volume 100ml is diluted by adding 50 ml water. calculate molarity of the solution​

Answer 1

Answer:

Explanation:

we know that equation for molarity

M≈ $\frac{m}{M}$×$\frac{1000}{V}$

V is volume.

∵M∝$\frac{1}{V}$

we can write :

$\frac{0.25}{M}$ ≈ $\frac{v2}{v1}$

where v2≈ 100 plus 50

thus we get

M≈ (0.25×v1)÷v2

⇒ (0.25×100)÷150

⇒0.166M.