Botany . This reaction is performed in a 1 lit vessel. Equilibrium is established when 0.5 mole of benzene is present at certain temperature. If equilibrium constant is 4 lit2 mole-2 . The total number of moles of the substances present at equilibrium.

large 3{C_2}{H_2}, Leftrightarrow ,{C_6}{H_6}

 

. This reaction is performed in a 1 lit vessel. Equilibrium is established when 0.5 mole of benzene is present at certain temperature. If equilibrium constant is 4 lit2 mole-2 . The total number of moles of the substances present at equilibrium.

  1. A

    0.5

  2. B

    1

  3. C

    1.5

  4. D

    2

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    Solution:

    large large 3{C_2}{H_2}, rightleftharpoons ,{C_6}{H_6}

    Vvessel = 1 lit

    large {left( {{n_{{C_6}{H_6}}}} right)_{eq}} = 0.5

    KC = 4M-1

    large therefore {K_C} = frac{{left[ {{C_6}{K_6}} right]}}{{left[ {{C_2}{H_2}} right]}^3}

    large 4 = frac{{left( {frac{{0.5}}{1}} right)}}{{left[ {{C_2}{H_2}} right]}^3}

    large [C_2H_2]^3=frac{0.5}{4}=frac{1}{8}

    large [C_2H_2]=left (frac{1}{8} right )^{{frac{1}{3}}}

    large [C_2H_2]=frac{1}{2}

    large {left( {{n_{{C_2}{H_2}}}} right)_{eq}} = frac{1}{2}

    no. of moles at equilirium = large {n_{{C_2}{H_2}}} + {n_{{C_6}{H_6}}}

    = 0.5 + 0.5 = 1

     

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