Question

A solution of water (kb=0.512 ?c/m) and glucose boils at 103.06 ?c. what is the molal concentration of glucose in this solution? assume that the boiling point of pure water is 100.00 ?c.

Answer 1

100.26°C

Step-by-step explanation:

Answer 2

When a solute is added to a solvent, some properties are affected and these set of properties are called colligative properties. The properties depend on the amount of solute dissolved in a solvent. For this we use the boiling point elevation of the solution. We do as follows:

ΔT(boiling point) = 103.06 °C - 100.0 °C= 3.06 °C
ΔT(boiling point) = (Kb)m
m = ΔT(boiling point) / Kb
m = 3.06 °C / 0.512 °C kg / mol
m = 5.98 mol / kg