When dilute sodium chloride is electrolyzed using graphite electrodes, the cation is discharged at the cathode most readily.

${N a}^{+}$

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${O H}^{-}$

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$H^{+}$

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$C l$ ^-

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Solution

The correct option is C
$H^{+}$

Step 1 Definition and concept
Graphite electrodes are used in electric arc furnace steel manufacturing.
Graphite has the best conductive properties.
Hence, the graphite rods are used in electrolysis.
The cations are discharged at the cathode most readily.
Step 2 Correct option
When dilute sodium chloride is electrolyzed using graphite electrodes, the $H^{+}$ cation is discharged at the cathode most readily.
So, Option C is correct.

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