Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) By how much would the oxidising power of the `MnO_4^-`/ `Mn_2^+` couple change if the `H^+` ions concentration is decreased 100 times - Sarthaks eConnect

By how much would the oxidising power of the `MnO_4^-`/ `Mn_2^+` couple change if the `H^+` ions concentration is decreased 100 times :

By how much would the oxidising power of the `MnO_4^-`/ `Mn_2^+` couple change if the `H^+` ions concentration is decreased 100 times :

A.

Increased by 189 mV

B.

Decreased by 189 mV

C.

Increased by 19 mV

D.

Decreased by 19 mV

Solution

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Best answer

This `E_(red)` decreases by 0.189 V. The tendency of the half cell to get reduced is its oxidising power. Hence, the oxidising power decreases by 0.189V.