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- How to solve this problem- A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 ml to 375 ml at a constant temperature of 37°C. As it does so, it absorbs 208J of heat. The value of q and w for the process will be: (In 7.5 =
A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 ml to 375 ml at a constant temperature of 37°C. As it does so, it absorbs 208J of heat. The value of q and w for the process will be: (In 7.5 = 2.01)
- Option 1)
q = -208 J, w = +208 J
- Option 2)
q = 208 J, w = 208 J
- Option 3)
q = 208 J, w = -208 J
- Option 4)
q = -208 J, w = -208 J
Answers (1)
As we discussed in concept
First law of Thermodynamics -
Energy of universe is always conserved or total energy of an isolated system is always conserved
- wherein
Internal Energy
Heat
work
Process is isothermal reversible expansion.
Therefore,
Now using first law of thermodynamics.
W = -g
= - 208 J
Option 1)
q = -208 J, w = +208 J
This option is incorrect.
Option 2)
q = 208 J, w = 208 J
This option is incorrect.
Option 3)
q = 208 J, w = -208 J
This option is correct.
Option 4)
q = -208 J, w = -208 J
This option is incorrect.
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