AP EAMCET · Chemistry · Electrochemistry
When a current of \(0.5 \mathrm{~A}\) is passed for 2 hours through a molten metal salt, \(3.88 \mathrm{~g}\) of the metal was deposited. If atomic mass of the metals is 208 units, the oxidation state of the metal in the salt is
- A 1
- B 2
- C 3
- D 4
Answer & Solution
Correct Answer
(B) 2
Step-by-step Solution
Detailed explanation
\begin{aligned} & w=\frac{E i t}{F}=\frac{\frac{A}{n} \times i \times t}{F} \\ & \Rightarrow n=\frac{A \times i \times t}{w \times F}=\frac{208 \times 0.5 \times(2 \times 3600)}{3.88 \times 96500}=1.999 \approx 2 \\ & {[\because A=\text { atomic mass of the metal }=208 \text {…
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