JEE PYQ: Solutions And Colligative Properties Question 2
Question 2 - 2021 (16 Mar Shift 2)
At 363 K, the vapour pressure of A is 21 kPa and that of B is 18 kPa. One mole of A and 2 moles of B are mixed. Assuming that this solution is ideal, the vapour pressure of the mixture is ____ kPa. (Round off to the Nearest Integer).
Show Answer
Answer: 19
Solution
$X_A = 1/3$, $X_B = 2/3$. $P_T = X_A P_A^0 + X_B P_B^0 = 7 + 12 = 19$ kPa.
BETA
