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MHT CET202415 May 2024Evening ShiftChemistryThermodynamics (C)Actual

In a particular reaction ' x ' kJ of heat is released by the system and ' y ' kJ of work done is done on the system. What is internal energy change?

Options

  1. Ax - ykJ
  2. By - xkJ
  3. Cx + ykJ
  4. Dxy kJ

Correct answer

B. y - xkJ

Step-by-step solution

Q =- xkJ , ~W =+ ykJ According to the first law of thermodynamics, array ll U =Q+W U =-x+y k J=y-x k J array

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