1.22 g C_6H_5COOH is added into two solvents and data of ΔT_b and k_b are given as: (i), In 100 g CH

### Question Asked by a Student from EXXAMM.com Team

Q 1210880719.     1.22 g C_6H_5COOH is added into two solvents and data of ΔT_b and k_b are given as:

(i), In 100 g CH_3COCH_3, ΔT_b = 0.17

k_b = 1.7 K kg/mol

(ii), In 100 g benzene, ΔT_b = 0.13 and

k_b = 2.6 K kg/mol

Find out the molecular weight of C_6H_5COOH in both the cases.
A

M = 122 & M = 244

B

M = 122 & M = 144

C

M = 222 & M = 144

D

M = 122 & M = 144

#### HINT

Use formula: ΔT_b = k_b· m`

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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