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Chemistry · THERMODYNAMICS

हिन्दी

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

  1. Both Statement I and Statement II are correct.
  2. Both Statement I and Statement II are incorrect.
  3. Statement I is correct but Statement II is incorrect.
  4. Statement I is incorrect but Statement II is correct.

Correct answer · Option 2

Both Statement I and Statement II are incorrect.

Explanation

Heat at constant volume equals internal energy change (\( q_v = \Delta U \)) and heat at constant pressure equals enthalpy change (\( q_p = \Delta H \)). Thus, both statements are incorrect.
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