AP EAMCET · Chemistry · Electrochemistry
Salts of \(A, B\) and \(C\) were electrolysed under identical conditions using the same quantity of electricity. It was found that when \(2.1 \mathrm{~g}\) of \(A\) was deposited, the weights of \(B\) and \(C\) deposited were \(2.7 \mathrm{~g}\) and \(9.6 \mathrm{~g}\). If the atomic mass of \(A, B\) and \(C\) respectively are 7,27 and 64 respectively, then the valancies of \(A, B\) and \(C\) respectively are
- A \(3,1,2\)
- B \(1,3,2\)
- C \(3,1,3\)
- D \(2,3,2\)
Answer & Solution
Correct Answer
(B) \(1,3,2\)
Step-by-step Solution
Detailed explanation
Using concept of Faraday law, Now, \(A^{n_1^{+}}+n_1 e^{-} \longrightarrow A\) Similarly, \(B^{n_2^{+}}+n_2 e^{-} \longrightarrow B\) and, \(\mathrm{C}^{n_3^{+}}+n_3 e^{-} \longrightarrow C\) Since, charge is same then equivalent weight is same,…
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