Redox Reactions And Electrochemistry Ques 218
Question: If the $ \Delta G $ of a cell reaction $ AgCl+{e^{-}}\to Ag+C{l^{-}} $ is $ -21.20\ KJ $ ; the standard e.m.f., of cell is [MP PMT 2004]
Options:
A) 0.229 V
B) 0.220 V
C) - 0.220 V
D) - 0.110 V
Show Answer
Answer:
Correct Answer: B
Solution:
Given: $ \Delta G=-21.20\ kJ\ =21200J $ $ \because \ \ \Delta G=-nFE $ $ E=\frac{21200}{1\times 96500}=0.2196\ V=0.22\ V. $
