pA and pB are the vapour pressure of pure liquid components, A and B, respectively of an ideal binary solution. If xA represents the mole fraction of component A, the total pressure of the solution will be
${p_A} + {x_A}\left( {{p_B} - {p_A}} \right)$
${p_A} + {x_A}\left( {{p_A} - {p_B}} \right)$
${p_B} + {x_A}\left( {{p_B} - {p_A}} \right)$
${p_B} + {x_A}\left( {{p_A} - {p_B}} \right)$
Solution
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