AP Chem Test Practice.

[shravas]

<p>

If the two half-cells below were combined, what would be the correct chemical equation to represent the spontaneous REDOX process?</p>

<p>Cu2+ + 2e- <====> Cu (+0.34V)
<a href=“http://www.adriandingleschemistrypages.com/apquiz.htm[/url]”>http://www.adriandingleschemistrypages.com/apquiz.htm&lt;/a&gt;&lt;/p&gt;

<p>H+ + e- <====> 1/2 H2 (0.00V)</p>

<p>(A) Cu2+ + H+ ==> 1/2 H2 + Cu
(B) Cu2+ + 2H+ ==> H2 + Cu
(C) Cu2+ + 1/2 H2 ==> H+ + Cu
(D) Cu2+ + H2 ==> 2H+ + Cu
(E) Cu + 2H+ ==> H2 + Cu2+

</p>

<p>Is this C? Someone said it was D, but wouldn’t you also have to balance for charge?</p>

[raller]

<p>

Is this C? Someone said it was D, but wouldn’t you also have to balance for charge?

</p>

<p>The charge is balanced in (C) (1)Cu2+ has the same 2H+</p>