# How to find potential of hydrogen electrode at pH=10 ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????/???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

1
by namku

2015-05-02T12:28:57+05:30

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To find potential formula is
Ecell = E° −  0.0591 log [H₂]
1         [H⁺]

⇒ for  [H⁺]
pH = 10 so,                           or  [H⁺] = 10∧⁻pH
pH = − log [H⁺]                            pH = 10
so [H⁺] = 10⁻¹⁰                            [H⁺] = 10⁻¹⁰

⇒ E° = 0

⇒ [H₂] = 1 [1 atm]

Ecell = E° −  0.0591 log [H₂]
1         [H⁺]
= 0 −  0.0591 log   [1]
1         [10⁻¹⁰ ]
= −  0.0591 (log 10¹⁰)
= −  0.0591 (10 log 10)
= −  0.0591 (10 * 1)      {log 10 =1}
= −  0.0591 x 10
Ecell = − 0.59 V