(Solved): The following reaction is important in the manufacture of sulphuric acid: \( ...

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The following reaction is important in the manufacture of sulphuric acid: \( \mathrm{SO}_{2}(g)+1 / 2 \mathrm{O}_{2}(g) \rightleftarrows \mathrm{SO}_{3}(g) \) At \( 900 \mathrm{~K}, 0.0540 \) moles of sulphur dioxide \& \( 0.0370 \) moles of oxygen are sealed in a \( 2.50 \mathrm{~L} \) reaction vessel. When equilibrium is reached, the amount of sulphur trioxide is determined to be \( 0.0430 \) moles. Calculate the equilibrium concentrations of all three compounds \& the value of Keq at \( 900 \mathrm{~K} \). \( \left(\mathrm{K}_{\text {eq }}=49.6 \mathrm{~L}^{\left.1 / / / \mathrm{mol}^{1 / 2}\right)}\right. \)