The molal elevation constant of water is …………… while that of benzene is ………………. .

Explanation

To answer the question regarding the molal elevation constants of water and benzene, we can follow these steps:

### Step 1: Understand the Concept of Molal Elevation Constant
The molal elevation constant (Kb) is a property of a solvent that indicates how much the boiling point of the solvent will increase when a solute is dissolved in it. This is a colligative property, which means it depends on the number of solute particles in a given amount of solvent, not the identity of the solute.

### Step 2: Identify the Values for Water and Benzene
From the information provided:
- The molal elevation constant for water (Kb for water) is **0.52 °C kg/mol**.
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