A) the temperature is constant
B) e.m.f depends on molarities of acids used
C) acids used in two compartments are different
D) pH of \[0.1\text{ }M\text{ }HCl\] and \[0.1\,M\,C{{H}_{3}}COOH\] is not same
Correct Answer: D
Solution :
[d] For a concentration cell having different concentrations of ions. \[E=-\frac{0.0591}{n}\log \frac{{{c}_{1}}}{{{c}_{2}}}\] If all the concentrations are identical then obviously the cell voltage is zero. But as the pH of 0.1 M \[HCl\] (strong acid) and pH of 0.1 M \[C{{H}_{3}}COOH\] is (weak acid) not same, therefore the cell voltage is not zero.You need to login to perform this action.
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