Chemistry · 2019
NEET 2019 · 20 May · Code G1 · Q129
The standard electrode potential ( E^ ) values of Al^3+ / Al, Ag^+ / Ag, K^+ / K and Cr^3+ / Cr are -1.66 V, 0.80 V, -2.93 V & - 0.74 V respectively.…
The standard electrode potential ( $\displaystyle \mathrm{E}^{\ominus}$ ) values of $\displaystyle \mathrm{Al}^{3+} / \mathrm{Al}, \mathrm{Ag}^{+} / \mathrm{Ag}, \mathrm{K}^{+} / \mathrm{K}$ and $\displaystyle \mathrm{Cr}^{3+} / \mathrm{Cr}$ are -$\displaystyle 1.66$ V, $\displaystyle 0.80$ V, -$\displaystyle 2.93$ V & - $\displaystyle 0.74$ V respectively. The correct decreasing order of reducing power of the metal is -
Official answer
(2)
$\displaystyle \mathrm{K}>\mathrm{Al}>\mathrm{Cr}>\mathrm{Ag}$
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NEET (UG) 2019 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.