Igcse Model Questions Vol1 2022 Chemistry Question 12
Practice objective / multiple choice question 12 from the 2022 Igcse Model Questions Vol1 Chemistry examination.
A student electrolyses an aqueous solution of metal XCl\(_2\) using a constant current of \(0.50\) A for \(1.00\) h. The cathode deposits \(0.52\) g of metal X. The same current is then passed through a solution of metal YCl\(_3\) for the same time, depositing \(1.66\) g of metal Y. The atomic masses are \(M_{\text{X}} = 55.8\) g mol\(^{-1}\) and \(M_{\text{Y}} = 88.9\) g mol\(^{-1}\). (a) Determine the number of electrons transferred per ion of each metal (i.e., the valency). (b) Given the standard reduction potentials \(E^{\circ}_{\text{X}^{n+}/\text{X}} = -0.76\) V and \(E^{\circ}_{\text{Y}^{m+}/\text{Y}} = -0.34\) V, state which metal is the more reactive.
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This is Igcse Model Questions Vol1 2022 Chemistry Question 12. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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