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6.1. Equilibrium - 1 (chemical Equilibrium) — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry6.1. Equilibrium - 1 (chemical Equilibrium)1 Mark
MCQ
The reaction $2S{O_2} + {O_2}$ $\rightleftharpoons$ $2S{O_3}$; $\Delta H$ $= -ve$ is favoured by
  • A
    Low temperature, low pressure
  • ✓
    Low temperature, high pressure
  • C
    High temperature, high pressure
  • D
    High temperature, low pressure
✓

Answer

Correct option: B.
Low temperature, high pressure
b
$2 SO _2+ O _2 \rightleftharpoons 2 SO _3+\text { Heat }$

In this reaction, heat is released i.e the reaction is exothermic, in forward reaction. Forward reactions are favoured at low temperatures and high pressures.

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