Gce Model Questions Vol1 2024 Chemistry Question 21
Practice objective / multiple choice question 21 from the 2024 Gce Model Questions Vol1 Chemistry examination.
An unknown metal M forms a galvanic cell with the half‑reaction \(\mathrm{M(s) | M^{2+} (1.0\;M) || Ag^{+} (0.010\;M) | Ag(s)}\). At 298 K the measured cell emf is \(0.34\;\text{V}\). (Standard reduction potential \(E^\circ_{\mathrm{Ag^{+}/Ag}} = +0.7996\;\text{V}\).)\n\n(a) Determine the standard reduction potential \(E^\circ_{\mathrm{M^{2+}/M}}\) and identify the metal from the list \{ Zn, Fe, Cu, Pb \}.\n\n(b) If \(25.0\;\text{mL}\) of \(0.10\;\text{M}\) \(\mathrm{Ag^{+}}\) solution is allowed to react in the cell (100 % current efficiency), calculate the mass of metallic silver deposited (to three significant figures).
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This is Gce Model Questions Vol1 2024 Chemistry Question 21. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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