Question
A solution of Zn is electrolysed for 30 s using a current if 1.0 mA. Calculate the mass of Zn plated on the electrode for the electrochemical reaction:
Zn2+ + 2e ® Zn
Answer :
Word Count : 175
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Skip in 10
Give ,
2+ + 2e-
Zn
time , t = 30 s
current , i = 1.0 mA = 10-3 A
Change produced Q = i t
= 10-3
= 30 x 10-3 C
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