Question

For the following reactions, write a balanced equation using half-reactions and calculate the

voltage to be expected. (2 marks each)

a. Sodium and water to produce sodium ions, hydroxide ions and hydrogen.

b. Silver and hydrogen ions to produce silver ions and hydrogen gas.

Answer 1

The balanced half reactions are written in terms of oxidation and reduction reactions occurringat the anodes and cathodes respectively.

What are half-reactions?

Half reactions are reactions which show oxidation and reduction half reactions.

The half reaction for the reaction of Sodium and water to produce sodium ions, hydroxide ions and hydrogen is given below:

$Na \rightarrow Na^{ + } + e^{-} \\ H_{2}0\rightarrow \: OH^{-} + H^{+}$

The half reaction for the reaction of Silver and hydrogen ions to produce silver ions and hydrogen gas is as follows:

$2Ag \rightarrow 2Ag + 2e^{-} \\ 2H^{ + } + 2e^{-}\rightarrow H_{2}$

Therefore, the balanced half reactions are written in terms of oxidation and reduction reactions.

Learn more about half equations at: https://brainly.com/question/2491738

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