After calculation ΔG∘, use the formula, ΔG∘=−nFE∘ Here, n=32 is taken because balanced equation is C5H12+8O2→5CO2+6H2O
NEET UG 2008 — Chemistry Physical Chemistry
Standard free energies of formation (in kJ/mol ) at 298 K are −237.2,−394.4 and -8.2 for H2O(l),CO2( g) and pentane (g) respectively. The value of Ecell ∘ for the pentaneoxygen fuel cell is
Held on 30 Apr 2008 · Verified 9 Jul 2026.
0.0968 V
1.968 V
2.0968 V
1.0968 V
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The unit of rate constant for a first-order reaction is:
For the reaction 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), ΔH = -198 kJ. Which condition favours forward reaction?
$\begin{aligned} &\text { Consider the following compounds: }\\ &\mathrm{\underline{K}O}_2, \mathrm{H}_2 \mathrm{\underline{O}}_2 \text { and } \mathrm{H}_2 \mathrm{\underline{S}O}_4 \text {. } \end{aligned}$ The oxidation states of the underlined elements in them are, respectively,
5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are 63 torr and 78 torr respectively. Which of the following is true regarding the described solution?
For the reaction $\mathrm{A}(\mathrm{g}) \rightleftharpoons 2 \mathrm{~B}(\mathrm{~g})$, the backward reaction rate constant is higher than the forward reaction rate constant by a factor of 2500 , at 1000 K . [Given : $\mathrm{R}=0.0831 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$ ] $\mathrm{K}_{\mathrm{p}}$ for the reaction at 1000 K is
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