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Chemistry · THERMODYNAMICS

हिन्दी

Given below are two statements:\n Statement I: The heat absorbed by a system at constant volume is equal to the change in its internal energy (\( q_v = \Delta U \)).\n Statement II: The heat absorbed by a system at constant pressure is equal to the change in its enthalpy (\( q_p = \Delta H \)). \nIn the light of the above statements, choose the most appropriate answer from the options given below:

  1. A
    Both Statement I and Statement II are correct.
  2. B
    Both Statement I and Statement II are incorrect.
  3. C
    Statement I is correct but Statement II is incorrect.
  4. D
    Statement I is incorrect but Statement II is correct.
View Answer & Solution

Correct answer · Option A

Both Statement I and Statement II are correct.

Explanation

By definition from first law of thermodynamics, at constant volume \( w = 0 \implies q_v = \Delta U \), and at constant pressure \( q_p = \Delta H \). Both statements are correct.
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