During the electrolysis of copper (II) tetraoxosulphate (VI) solution, an ammeter shows a steady reading of 1A for 30minutes while 6.6 x (10^{-4})kg of copper is liberated. Calculate the error in the ammeter The electrochemical equivalent of copper is 3.30 x (10^{-7}kgC{-1})
-
A.
0.001A -
B.
0.011A -
C.
0.111A -
D.
1A -
E.
1.1A
Correct Answer: Option C
Explanation
m=zIt, (I=frac{m}{zt}= frac{6.6times10^{-4}}{3.3 times10^{-7}times 1800}=1.1111\ )error=1.1111-1.0=0.111A.