✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
Consider the following reaction :
$\text{Zn}_{(s)} + \text{Ag}_2\text{O}_{(s)} + \text{H}_2\text{O}(l) \rightarrow \text{Zn}^2+_{(\text{aq})} + 2\text{Ag}_{(s)} + 2\text{OH}^-_{(\text{aq})}$
Given : $E^\circ_{\text{Ag}^+/\text{Ag}} = 0.80\text{ V}$
$E^\circ_{\text{Zn}^{2+}/\text{Zn}} = - 0.76\text{ V}$
$1\text{ F} = 96500\text{ C mol}^{-1}$
$\Delta_r G^\circ$ for the above reaction is :
A
$- 301.080\text{ kJ mol}^{-1}$
B
$+ 310.080\text{ kJ mol}^{-1}$
C
$- 326.070\text{ kJ mol}^{-1}$
D
$- 375.060\text{ kJ mol}^{-1}$
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 56-2 | Set 1 | Question 1 |
| CBSE 2026 | Series 56-2 | Set 2 | Question 12 |
| CBSE 2026 | Series 56-2 | Set 3 | Question 2 |
02 // OFFICIAL CBSE MARKING SCHEME BREAKDOWN
- Step 1: Stating the fundamental formula / law statement (+1 Mark)
- Step 2: Intermediate mathematical substitution or proof steps (+1 Mark)
- Step 3: Correct final value or conclusion with mandatory SI units (+1 Mark)