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The emf of the following cell is observe...

The `emf` of the following cell is observed to be `0.118V` at `25^(@)C`.
`[Pt,H_(2)(1atm)|HA(100mL 0.1M||H^(o+)(0.1M)|H_(2)(1atm)|Pt]`
a. If `30mL` of `0.2M NaOH` is added to the negative terminal of battery, find the emf of the cell.
b. If `50mL` of `0.2 M NaOH` is added to the negative terminal of battery, find the emf of teh cell.

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