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Question
If water is cooled from 4∘C to 0∘C. Which of the following conditions will be true for water.
If water is cooled from 4∘C to 0∘C. Which of the following conditions will be true for water.
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Solution
The correct options are
A Water's molecules will begin to form a hexagonal structure.
C The volume of the water will expand
D The upper surface of the water will be colder.
At 0∘C, water molecules are influenced by the hydrogen bonding forces to align themselves into a hexagonal 3D lattice.
The density of water is maximum at 4∘C. Water molecules having the maximum density starts settling down at 4∘C. Remaining water molecules which are relatively less dense goes up the surface and starts cooling down. So the top surface of water will be cooler. When water is cooled below 4∘C, density decreases and volume increases. So, water starts to expand.
A
Water's molecules will begin to form a hexagonal structure.
C
The volume of the water will expand
D
The upper surface of the water will be colder.
At 0∘C, water molecules are influenced by the hydrogen bonding forces to align themselves into a hexagonal 3D lattice.
The density of water is maximum at 4∘C. Water molecules having the maximum density starts settling down at 4∘C. Remaining water molecules which are relatively less dense goes up the surface and starts cooling down. So the top surface of water will be cooler. When water is cooled below 4∘C, density decreases and volume increases. So, water starts to expand.
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