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When a Solution of a Certain Gadolinium Salt Is Electrolyzed

Question 57

Multiple Choice

When a solution of a certain gadolinium salt is electrolyzed with a current of 1.0 A for 2.0 h, 0.025 mol of Gd metal forms. Calculate the charge on the gadolinium ion in the salt.


A) +4
B) +3
C) +2
D) +1
E) None of the above

Correct Answer:

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