Question

calculate the mole fraction of 20% of w/w aquous KI solution​

Answer 1

Answer:

Explanation:

20% w/w KI solution means 20g KI in 100g solution.

Hence,mass of solvent=100-20=80g

Now, molality of a solution is defined as ratio of number of moles to mass of solvent in kg.

Number of moles of KI=Mass/Molar mass=20/(39+127)=20/166

Molality=(20/166)/(80/1000)=1.5