Question

120g of sugar dissolve in 750ml of solution find its molarity​

Answer 1

Answer:

Molality =

mass of solvent in kg

no of moles of solute

Molar mass of glucose = 180g

Mass of glucose =10

No of moles of glucose =

180

10

=0.0556mol

the solution of glucose in water which is 10% w/W means 10 g of glucose in 100 g of solution

Mass of solvenyt=100-10=90 g =0.090 kg

Molality =

0.090

0.556

=0.617m