Question

8. Which of the following solutions will have higher freezing point depression and
why?
a. 0.1 molal NaCl b. 0.05 molal Al(SO4)3

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Answer 1

Answer: HOPE THIS HELPS YOU, MARK BRAINLIST AND THANK.

Explanation: Depression in freezing point will be maximum for the compound having maximum van't Hoff factor i which is maximum for Al2(SO4)3

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 which furnishes 5 ions in the solution, therefore i=5 hence, it will have maximum depression in freezing point in case of the same concentration.

Here, in case of Al2SO4  and NaCl, Al2

SO4  have higher i×C value.

HENCE CORRECT ANSWER IS OPTION B. Al₂SO₄

Answer 2

Answer:

Al2(SO4)3 will have higher freezing point depression.

Explanation:

Al2(SO4)3 will have higher freezing point because it is less reactive then sodium and sodium also react with very cold water. But Aluminium is not that much reactive so it will freeze faster