WBJEE · Chemistry · Electrochemistry
The charge carried by 1 millimole of \(M^{n+}\) ions is 193 coulombs. The value of \(n\) is
- A 1
- B 2
- C 3
- D 4
Answer & Solution
Correct Answer
(B) 2
Step-by-step Solution
Detailed explanation
One millimole \(=0.001 \mathrm{mol}\) i.e. \(1 \times 10^{-3} \mathrm{mol}\) \(\because 96500 \mathrm{C}\) is required for \(1 \mathrm{mol}\) of electrons. \(\therefore 193 \mathrm{C}\) give \(\frac{193 \times 1}{96500}=0.002 \mathrm{mol},\) i.e.…
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