The value of the reaction quotient 'Q' for the following cell is Y.
$C r (s) | C r^{3 +} (a q) (0.1 M) | | C u^{2 +} (a q) (0.5 M) | C u (s)$
Find the value of Y

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Solution

$\begin{matrix} 2 C r (s) + 3 C u^{2 +} & \to & 2 C r^{3 +} + 3 C u (s) \end{matrix}$
$Q = \frac{(C r^{3 +})^{2}}{(C u^{2 +})^{3}} = \frac{(0.1)^{2}}{(0.5)^{3}} = 8 \times 10^{- 2}$

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