(A) Water and phenol are completely miscible at temperatures above 66.8 °C but only partially miscible at temperatures below 66.8 °C In a mixture prepared at 29.6 °C from 50.0 g water and 50.0 g phenol, 32.8 g of a phase consisting of 92.50% water and 7.50% phenol by mass is obtained. This is a saturated solution of phenol in water. What is the mass percent of water in the second phase—a saturated solution of water in phenol? What is the mole fraction of phenol in the mixture at temperatures above 66.8 °C?

(B) At a constant temperature of a current of 25.00 °C, dry air was passed through pure water and then through a drying tube, D₁, followed by passage through 1.00 m sucrose and another drying tube, D₂. After the experiment, D₁ had gained 11.7458 g in mass and D₂ had gained 11.5057 g. Given that the vapor pressure of water is 23.76 mmHg at 25.00 °C, 

(a) What was the vapor pressure lowering in the 1.00 m sucrose solution, and 

(b) What was the expected lowering?