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NEETChemistryThermodynamics (C)

Given below are two statements: Statement I : The entropy decreases when the temperature of a crystalline solid is raised from 0 K to 115 K . Statement II: On raising temperature 0 K to 115 K the constituted particles begin to move therefore entropy increases. In the light of the above statements, choose the most appropriate answer from the options given below :

Options

  1. ABoth statement I and statement II are incorrect.
  2. BStatement I is correct but statement II is incorrect
  3. CStatement I is incorrect but statement II is correct.
  4. DBoth statements I and statements II are correct.

Correct answer

C. Statement I is incorrect but statement II is correct.

Step-by-step solution

- Statement I: The entropy does not decrease when the temperature of a crystalline solid is raised from 0 K to 115 K. In fact, as the temperature increases, the particles gain energy and begin to move more freely, leading to an increase in entropy. Therefore, this statement is incorrect. - Statement II: As the temperature increases from 0 K to 115 K, the constituent particles of the solid begin to vibrate more and gain kinetic energy, which results in an increase in entropy. This statement is correct.

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