Question

The addition of 6 g of salt to a sample of pure water causes its freezing point to be reduced from 0°C to -1.5°C. After an additional amount of salt is dissolved in the solution, its freezing point is -4.5°C. What is the total amount of salt dissolved in the sample of water?

Answer 1

Total amount of salt dissolved in water = 18 gram

Step-by-step explanation:

Given:

Addition of salt = 6 gram

From 6 g salt freezing point from = 0°C to -1.5°

Present freezing point = -4.5°C

Find:

Total amount of salt dissolved in water = ?

Computation:

⇒ Total amount of salt dissolved in water = [Present freezing point / From 6 g salt freezing point] Addition of salt

⇒ Total amount of salt dissolved in water = [(-4.5°C) / (-1.5°C)] 6 gram

⇒ Total amount of salt dissolved in water = [3] 6 gram

⇒Total amount of salt dissolved in water = 18 gram