COMEDK · Chemistry · 18. Electrochemistry
\(3.482 \times 10^{-1}\)g of Fe gets deposited when an aqueous solution of Ferric sulphate is electrolysed for 20 minutes using a current of "x" amperes. Find "x". (Atomic mass of Fe = 56amu).
- A \(1.5\text{A}\)
- B \(2.4\text{A}\)
- C \(0.98\text{A}\)
- D \(2.8\text{A}\)
Answer & Solution
Correct Answer
(A) \(1.5\text{A}\)
Step-by-step Solution
Detailed explanation
The chemical formula of ferric sulphate is \(\text{Fe}_2(\text{SO}_4)_3\). The reduction reaction at the cathode is: \(\text{Fe}^{3+} + 3e^{-} \rightarrow \text{Fe}\) The number of electrons involved in the reduction of one \(\text{Fe}^{3+}\) ion is \(3\). Thus, the equivalent…
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