Anonymous
Anonymous asked in Science & MathematicsChemistry · 3 weeks ago

A voltaic cell is constructed using the reaction: Mg (s)+ 2 H+ (aq) --> Mg2+ (aq) + H2 (g) The standard cell potential for this reaction is?

A voltaic cell is constructed using the reaction:

Mg (s) + 2 H+ (aq) --> Mg2+ (aq) + H2 (g)

The standard cell potential for this reaction is:

 {answer looks like "# V"}

I need help solving this question. I got 2.36 but I believe this is wrong. 

1 Answer

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  • 3 weeks ago

    +2.36 V is the correct answer.

    It helps that 2H+ ---> H2 is defined as zero volts.

    Since Mg ---> Mg2+ is an oxidation, we flip the sign on the value listed in your standard reduction potential chart.

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