Write the formula which expresses the relationship between the total pressure of a solution $(P_{total})$ and the mole fraction $(x_2)$ of the components,according to Raoult's law.

(N/A) According to Raoult's law,for a solution of two volatile components,the total pressure $(P_{total})$ is given by:
$P_{total} = P_1 + P_2$
Since $P_1 = x_1 P_1^0$ and $P_2 = x_2 P_2^0$,and $x_1 = 1 - x_2$:
$P_{total} = (1 - x_2) P_1^0 + x_2 P_2^0$
$P_{total} = P_1^0 - x_2 P_1^0 + x_2 P_2^0$
$P_{total} = P_1^0 + x_2(P_2^0 - P_1^0)$