✓ Board-verified
Chemistry · 2023 · 1 mark
CBSE 2023 · Region 1 · Set 2 · Q3
Ag^+( aq )+ e^- → Ag ( s ) E^°=+0.80 V Fe^2+( aq )+2 e^- → Fe ( s ) E^°=-0.44 V Find the E_cell^° for: Fe ( s )+2 Ag^+( aq ) → Fe^2+( aq )+2 Ag ( s )
$\displaystyle \mathrm{Ag}^{+}(\mathrm{aq})+\mathrm{e}^{-} \longrightarrow \mathrm{Ag}(\mathrm{s}) \quad \mathrm{E}^{\circ}=+0.80 \mathrm{~V}$ $\displaystyle \mathrm{Fe}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \longrightarrow \mathrm{Fe}(\mathrm{s}) \quad \mathrm{E}^{\circ}=-0.44 \mathrm{~V}$ Find the $\displaystyle \mathrm{E}_{\text {cell }}^{\circ}$ for: $\displaystyle \mathrm{Fe}(\mathrm{s})+2 \mathrm{Ag}^{+}(\mathrm{aq}) \longrightarrow \mathrm{Fe}^{2+}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})$
Official answer
(D)
1.$\displaystyle 24$ V
All Electrochemistry questions2023 question paperNCERT solutions: ElectrochemistryPractice Electrochemistry →
More from Electrochemistry
- Kohlrausch gave the following relation for strong electrolytes: Λ_m=Λ_m^°-A √C Which of the following equality holds true?2025 · asked 2×
- Assertion: E_Cu^° 2+/ Cu is positive (+0.34 V). Reason (R): Copper has high Δ_a H^° and low Δ_hyd H^°.2023 · asked 2×
- During the electrolysis of aqueous NaCl, the cathodic reaction is:2024
- Calculate the standard Gibbs energy (Δ_r G^°) of the following reaction at 25 °C: 3 + 2 Au( s)+Ca^2+(1 M) → Au^3+(1 M)+Ca( s); E_Au^3+ / Au^°=+1.5 V,…2025
- (i) What should be the signs (positive/negative) for E^°_Cell and Δ G^° for a spontaneous redox reaction occurring under standard conditions? (ii)…2023
- Batteries and fuel cells are very useful forms of galvanic cell. Any battery or cell that we use as a source of electrical energy is basically a…2024
- (i) Why on dilution the Λ_m of CH_3 COOH increases very fast, while that of CH_3 COONa increases gradually? (ii) What happens if external potential…2022
- During electrolysis of dilute H_2 SO_4, using platinum electrodes, the gas evolved at the anode is:2025
CBSE Class 12 Chemistry past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.