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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
In which of the following equilibrium, change in volume of the system does not alter the number of moles ?
  • ✓
    ${N_2}_{\left( g \right)} + {O_2}_{\left( g \right)} \rightleftharpoons 2N{O_{\left( g \right)}}$
  • B
    $PC{l_5}_{\left( g \right)} \rightleftharpoons PC{l_3}_{\left( g \right)} + C{l_2}_{\left( g \right)}$
  • C
    ${N_2}_{\left( g \right)} + 3{H_2}_{\left( g \right)} \rightleftharpoons 2N{H_3}_{\left( g \right)}$
  • D
    $S{O_2}C{l_2}_{\left( g \right)} \rightleftharpoons S{O_2}_{\left( g \right)} + C{l_2}_{\left( g \right)}$
✓

Answer

Correct option: A.
${N_2}_{\left( g \right)} + {O_2}_{\left( g \right)} \rightleftharpoons 2N{O_{\left( g \right)}}$
a
In the equilibrium $\mathrm{N}_{2}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{g}) \leftrightharpoons 2 \mathrm{NO}(\mathrm{g})$, change in the volume of the system does not alter the number of moles.

Volume change is accompanied with pressure change. A reaction in which the total number of moles of gaseous reactants is equal to the total number of moles of gaseous products, the change in pressure will not affect the position of the equilibrium.

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