# Why are 1 molar and 1 molal solutions of glucose different concentrations?

##### 1 Answer

May 6, 2017

#### Explanation:

A **1 mol/kg solution** of glucose contains 1 mol sucrose in **1 kg water**.

A **1 mol/L solution** of glucose contains 1 mol sucrose in **1 L of solution**.

The density of the solution is 1.066 g/mL.

∴ The mass of 1 L solution is

Thus the solution contains 1 mol glucose (180.16 g) in 0.886 kg water.

The two solutions each contain 1 mol glucose but different amounts of water.