Question

Correct order of strength of H-bond in the following -:
(A) Liquid water
(B) Ice 
(C) Impure water

• A. A > B > C
• B. A < B < C
• C. B > A > C
• D. A = B > C

Answer 1

The Correct Option is C

The strength of hydrogen bonding varies in different substances based on their molecular structure and the presence of impurities. Let's analyze the given options to determine the correct order of hydrogen bond strength among liquid water, ice, and impure water.

1. Ice (B): Ice has a crystalline structure where each water molecule is tetrahedrally coordinated to four other water molecules through hydrogen bonds. This regular and rigid structure ensures stronger hydrogen bonds compared to liquid water, where molecules are more randomly arranged.
2. Liquid Water (A): In liquid water, hydrogen bonds are continuously breaking and forming due to the movement of water molecules. While still strong, these bonds are weaker than those in ice due to the lack of a fixed structure.
3. Impure Water (C): The presence of impurities in water disrupts the hydrogen bond network. The added particles or substances interfere with the ability of water molecules to hydrogen bond with each other, resulting in weaker hydrogen bonds compared to pure liquid water and especially ice.

Based on these analyses, the correct order of strength of hydrogen bonds is:

B > A > C

Hence, option B > A > C is the correct answer. This sequence reflects the hierarchy from the strongest hydrogen bonds in ice to the weakest in impure water.