Chemical EquilibriumHard
Question
From the following data, (i) H2(g) + CO2(g) $\rightleftharpoons$ H2O(g) + CO(g); K2000 K = 4.4
(ii) 2H2O(g) $\rightleftharpoons$ 2H2(g) + O2(g); K2000 K = 5.31 × 10−10
(iii) 2CO(g) + O2(g) $\rightleftharpoons$2CO2(g); K1000 K = 2.24 × 1022 show whether reaction
(iii) is exothermic or endothermic or thermal.
Options
A.Exothermic
B.Endothermic
C.Thermal
D.Cannot say
Solution
From (i) and (ii), 2CO(g) + O2(g) $\rightleftharpoons$2CO2(g)
$K_{2000} = \frac{1}{(4.4)^{2} \times 5.31 \times 10^{- 10}} = 9.73 \times 10^{7}$
K1000 = 2.24 × 1022
On increasing temperature, Keq is decreased and hence, ΔH° = –ve.
Create a free account to view solution
View Solution FreeMore Chemical Equilibrium Questions
The two equilibria AB$\rightleftharpoons$A+ + B– and AB + B– $\rightleftharpoons$AB2− are simultaneously maintained in a...PCl5(g) $\rightleftharpoons$PCl3(g) + Cl2(g). In the above reaction, the partial pressure of PCl3, Cl2 and PCl5 are 0.3,...Two gases A and B, one being the dimer of the other, are at equilibrium. Decreasing of pressure at constant temperature ...Steam reacts with iron at high temperature to give hydrogen gas and Fe3O4(s). The corrent expression for the equilibrium...If for 2A2B(g) ⇋ 2A2(g) + B2(g), Kp = TOTAL PRESSURE (at equilibrium) and starting the dissociation from 4 mol of ...