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The surface tension of \( \mathrm{CHCl}_{3} \) at \( 20^{\circ} \mathrm{C} \) is \( 27.4 \times 10^{-3} \mathrm{Nm}^{-1} \). The density of \( \mathrm{H}_{2} \mathrm{O} \) at \( 20^{\circ} \mathrm{C} \) is \( 0.9982 \mathrm{~kg} \mathrm{~m}^{-3} \) and that of \( \mathrm{CHCl}_{3} \) at the same temperature is \( 1.595 \mathrm{~kg} \mathrm{~m}^{-3} \). If the rise of \( \mathrm{CHCl}_{3} \) and water in a capillary tube of a certain diameter is \( 2.33 \mathrm{~cm} \) and \( 9.9 \mathrm{~cm} \) respectively, calculate the surface tension of water.
(A) \( 82.76 \times 10^{-3} \mathrm{Nm}^{-1} \)
(B) \( 72.86 \times 10^{-3} \mathrm{Nm}^{-1} \)
(C) \( 78.68 \times 10^{-3} \mathrm{Nm}^{-1} \)
(D) \( 68.72 \times 10^{-3} \mathrm{Nm}^{-1} \)
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