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Question
For the conversion of liquid into a solid :
For the conversion of liquid into a solid :
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Solution
The correct option is B orderliness increases and entropy decreases
Entropy is related to the degree of order in the structure of a system and the second law of thermodynamics means that the system always changes from a more ordered state to a less ordered state in any isolated system.
In the solid phase, the molecules are arranged in a very orderly array. Each atom has a definite equilibrium location in the regular array of atoms and it can only move around with small displacements from its equilibrium position. In the gas phase, the molecules are far apart from each other and move around almost independently from each other in random fashion. In the liquid phase the situation is intermediate, being neither as orderly as in the solid nor as random as in the gas.
Therefore, in the phase transition from liquid into a solid, the orderliness of the molecules increases. As the Entropy is a quantity to measure the order of a system. The entropy of a system decreases when the system undergoes a phase transition from liquid to solid.
Hence, orderliness increases and entropy decreases.Therefore, the correct option is ′D′.
Entropy is related to the degree of order in the structure of a system and the second law of thermodynamics means that the system always changes from a more ordered state to a less ordered state in any isolated system.
In the solid phase, the molecules are arranged in a very orderly array. Each atom has a definite equilibrium location in the regular array of atoms and it can only move around with small displacements from its equilibrium position. In the gas phase, the molecules are far apart from each other and move around almost independently from each other in random fashion. In the liquid phase the situation is intermediate, being neither as orderly as in the solid nor as random as in the gas.
Therefore, in the phase transition from liquid into a solid, the orderliness of the molecules increases. As the Entropy is a quantity to measure the order of a system. The entropy of a system decreases when the system undergoes a phase transition from liquid to solid.
Hence, orderliness increases and entropy decreases.
Therefore, the correct option is ′D′.
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