Rule on these claims about solutions

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Osmotic pressure of a dilute solution follows pi equals C R T.

2. Statement is true

   No

   Statement

   A larger Henry law constant means the gas dissolves more readily.

3. Statement is true

   Yes

   Statement

   Isotonic solutions exert equal osmotic pressure at one temperature.

4. Statement is true

   No

   Statement

   Gas solubility in a liquid rises as the temperature rises.

5. Statement is true

   Yes

   Statement

   Sodium chloride fully dissociated gives a van't Hoff factor of 2.

6. Statement is true

   No

   Statement

   Benzoic acid dimerised in benzene gives a van't Hoff factor of 2.

7. Statement is true

   Yes

   Statement

   Desalination of sea water is done mainly by reverse osmosis.

8. Statement is true

   No

   Statement

   The molal elevation constant depends on which solute is added.

Instructions

Tap true or false for each claim about gas solubility, osmosis and colligative properties.

Explanation