Question

The mole fraction of naoh in 5 molal aqueous naoh solution is

Answer 1

Hey Dear,

◆ Answer -

Mole fraction of NaOH = 0.0826

● Explaination -

# Given -

m = 5 m

# Solution -

5 m NaOH solution contains 5 moles of NaOH in 1 kg of water.

W1 = 1000 g

n2 = 5 mol

Moles of water will be -

n1 = W1 / M1

n1 = 1000 / 18

n1 = 55.56 mol

Mole fraction of NaOH in aqueous solution -

X2 = n2 / (n1 + n2)

X2 = 5 / (55.56 + 5)

X2 = 0.0826

Therefore, mole fraction of NaOH is 0.0826 .

Thanks dear...