137) Which of the following liquid pairs shows a positive deviation from Raoult′s law?

138) An aqueous solution of sucrose, containing 34.2 gm⁄L, has an osmotic pressure of 2.38 atm at 17^oC. For an aqueous solution of glucose to be isotonic with this solution, it would have:

139) pH of 0.1M monobasic acid solution is found to be 2. Its osmotic pressure at T K is:

140) 0.01M solution of KCl nad BaCl₂ are prepared in water. The freezing point of KCl is found to be −2^oC. What is the freezing point of BaCl₂ solution, assuming both to be completely ionized?

141) A 5% solution of sugarcane (mass = 342) is isotonic with 1% solution of X under similar conditions. The molecular weight of X is: