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Chemical Equilibrium question

2012 · Q77
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Chemical Equilibrium question

2012 · Q77

NEETChemistryChemical EquilibriumMCQ+4 / −1
Given that the equilibrium constant for the reaction,
2SO2(g) + O2(g) ⇌\rightleftharpoons⇌ 2SO3(g)
has a value of 278 at a particular temperature. What is the value of the equilibrium constant for the following reaction at the same temperature ?
SO3(g) ⇌\rightleftharpoons⇌ SO2(g) + 12{1 \over 2}21​ O2(g)
  1. A
    1.8 ×\times× 10−-−3
  2. B
    3.6 ×\times× 10−-−3
  3. C
    6.0 ×\times× 10−-−2
  4. D
    1.3 ×\times× 10−-−5
View written solutionFree

Correct answer: C

2SO2(g) + O2(g) ⇌\rightleftharpoons⇌ 2SO3(g),    K

SO3(g) ⇌\rightleftharpoons⇌ SO2(g) + 12{1 \over 2}21​ O2(g),     K' = 1K\sqrt {{1 \over K}} K1​​

∴\therefore∴ K' = 1278=\sqrt {{1 \over {278}}} = 2781​​= 6.0 ×\times× 10−-−2

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