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JIPMER 2017
Exam
JIPMER
Year
2017
Subject
Chemistry
Chapter
Electrochemistry

JIPMER 2017 · Chemistry · Electrochemistry

The value of reaction quotient (Q) , for the following cell...

The value of reaction quotient (Q)(Q), for the following cell Zn(s)∣Zn2+(0.01M)∣∣Ag+(1.25M)∣\mathrm{Zn}(s)\left|\mathrm{Zn}^{2+}(0.01 \mathrm{M})\right|\left|\mathrm{Ag}^{+}(1.25 \mathrm{M})\right| Ag⁡(s)\operatorname{Ag}(s) isThe value of reaction quotient (Q) , for the following cell Zn(s)|Zn^ 2+ (0.01 M)||Ag^ + (1.25 M)| Ag(s) is

Options

  1. A156156
  2. B125125
  3. C1.25×10−21.25 \times 10^{-2}
  4. D6.4×10−36.4 \times 10^{-3}

Correct answer

D. 6.4×10−36.4 \times 10^{-3}

Step-by-step solution

The cell reaction is The value of reaction quotient (Q) , for the following cell Zn(s)|Zn^ 2+ (0.01 M)||Ag^ + (1.25 M)| Ag(s) is ∴Q=[Zn2+][Ag+]2=0.01(1.25)2=6.4×10−3\therefore Q=\frac{\left[\mathrm{Zn}^{2+}\right]}{\left[\mathrm{Ag}^{+}\right]^2}=\frac{0.01}{(1.25)^2}=6.4 \times 10^{-3} ∴\therefore Value of Q=6.4×10−3Q=6.4 \times 10^{-3}
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