Question

Find the mole fraction of 10% NaoH solution

Answer 1

Explanation:

NaOH solution is prepared in water.

Molar mass of NaOH=40 g

Mass of NaOH=10 g

Molar mass of water = 18 g

Given mass of water = 90 g

Number of moles of NaOH=4010=0.25 moles

Number of moles of H2O=1890=5 moles

Mole fraction of NaOH=0.25+50.25=0.047