A) \[q=w=500\,J,\,\Delta U=0\]
B) \[q=\Delta U=500\,J,\,w=0\]
C) \[q=w=500\,J,\,\Delta U=0\]
D) \[\Delta U=0,\,\,q=w=-500\,J\]
Correct Answer: B
Solution :
As we know that \[\Delta H=\Delta E+P\Delta V\] |
When \[\Delta V=0\] \[\therefore \] \[\Delta H=\Delta E\] |
From first law of thermodynamics |
\[\Delta E=q-W\] |
In given problem \[\Delta H=500\,J\] |
\[-W=-p\Delta V,\] \[\Delta V=0\] |
So, \[\Delta E=q=500\,J\] |
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