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Manipal MET2022ChemistryThermodynamics (C)

If gas absorbs 150 J of heat and expands by 450 ~cm ^3 against a constant pressure of 2 10^5 Nm ⁻² , then change in internal energy is

Options

  1. A-60 ~J
  2. B60 J
  3. C240 J
  4. D-240 ~J

Correct answer

B. 60 J

Step-by-step solution

Given, q=150 ~J We know, aligned w=p V & =2 10^5 Nm ⁻² 450 10⁻⁶ ~m ^3 & =90 Nm =90 ~J U & =q-w=150-90=60 ~J aligned Also,

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