Chemical Thermodynamics Question 158
Question: For spontaneity of a cell, which is correct [Orissa JEE 2004]
Options:
A) $ \Delta G=0,,\Delta E=0 $
B) $ \Delta G=-ve,,\Delta E=0 $
C) $ \Delta G=+ve,,\Delta E=+ve $
D) $ \Delta G=-ve,,\Delta E=+ve $
Show Answer
Answer:
Correct Answer: D
Solution:
$ \Delta G=\Delta H-T\Delta S $ ; $ \Delta G=\Delta E+P\Delta V-T\Delta S $ For spontaneity $ (\Delta G=-ve) $
$ \because $ $ \Delta G=-ve $ , $ \Delta E=+ve $
