In an electrolysis experiment, the ammeter records a steady current of 1 A. The mass of copper deposited in 30 minutes is 0.66 g. Calculate the error in the ammeter reading. [Electrochemical equivalent of copper = 0.00033 g C(^{-1})]
Explanation
M = zit
I = (frac{M}{Zt}) = (frac{0.66}{3 times 60 times 33 times 10^{-5}})
= 1.11A
Error = 1.11 – 1
= 0.11A