How do you write the balanced equation for this cell reaction? #2Cd(s) + 2Aq^(+)(aq) -> Cd^(2+)(aq) + 2Ag(s)#

1 Answer
anor277
Dec 14, 2016

#Cd(s) + 2Ag^(+) rarr Cd^(2+) + 2Ag(s)#

Explanation:

Both mass and charge are balanced, and thus this is reasonable.

How to predict #E^@# for this reaction?

#Cd^(2+) +2e^(-)rarrCd#; #E^@=-0.40V#

#Ag^(+) +e^(-)rarrAg#; #E^@=+0.80V#

The given cell should have #E_"cell"=1.20*V#. Do you agree?

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