Redox Reactions And Electrochemistry Ques 731
Question: The temperature coefficient of a cell whose operation is based on the reaction
$ Pb(s)+HgCl_2(aq)\xrightarrow{{}}PbCl_2(aq)+Hg(l) $ $ {{( \frac{dE}{dT} )}_{p}}=1.5\times {10^{-4}}V/K,at,298K $ The change in entropy (in J/K mol) during the operation is:
Options:
A) 8627
B) 57.9
C) 28.95
D) 14.475
Show Answer
Answer:
Correct Answer: C
Solution:
[c] $ \Delta S=nF{{( \frac{dE}{dT} )}_{P}}\Rightarrow 2\times 96500\times 1.5\times {10^{-4}} $
$ \Rightarrow $ $ 28.95,J/K,mol $
