Question

25 points

class 12 chemistry
solutions chapter​

Answer 1

Heya!!

_______________________✨✨✨

Bro❤️... go through attached pic

hope it helps!!

#phoeniX

Answer 2

Answer:

• pls mark as brainliest friend

Explanation:

The molar mass M2 of non-volatile substance can be calculated from the following formula.

p0-p/p0=W2×M1/W1+M2

Here, p0 vapour pressure of acetone and p is the vapour pressure of the solution.

.

M1 and W 1 are the molar mass and mass of acetone.

M2 and W2are the molar mass and mass of a non-volatile substance.

Substitute values in the above expression.

185-183/185=1.2×58/100×M2

Hence, M2 =64.38g/mol.

Thus, the molar mass of the non-volatile substance is 64 g/mol (approximately).

Hence, the correct option is B