Question: Devise cells in which the following are the reactions and calculate the standard emf in each case: (a) 2 Na(s) + 2 H20 (l) --7

Devise cells in which the following are the reactions and calculate the standard emf in each case:
(a) 2 Na(s) + 2 H20 (l) --7 2 NaOH (aq) + H2 (g)
(b) H2 (g) + I2 (g) --72 HI (aq)
(c) H30+ (aq) + OW (aq) --72 HzO (l)

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