The freezing point of a solution containing 0.2 g of acetic acid in 20.0 g benzene is lowered by 0.45°C. Calculate the degree of dimerization of acetic acid in benzene. Kf for benzene is 5.12 K mol−1  kg, Round off the answer to the nearest integer value.

# The freezing point of a solution containing 0.2 g of acetic acid in 20.0 g benzene is lowered by 0.45°C. Calculate the degree of dimerization of acetic acid in benzene. Kf for benzene is 5.12 $\mathrm{K}\text{\hspace{0.17em}}{\mathrm{mol}}^{-1}\text{\hspace{0.17em}\hspace{0.17em}}\mathrm{kg}$, Round off the answer to the nearest integer value.

Fill Out the Form for Expert Academic Guidance!l

+91

Live ClassesBooksTest SeriesSelf Learning

Verify OTP Code (required)

### Solution:

Given
${\mathrm{\Delta T}}_{\mathrm{f}}=\frac{1000\left({\mathrm{K}}_{\mathrm{f}}\right)\left(\mathrm{W}\right)}{\mathrm{M}\left(\mathrm{W}\right)}0.45=\frac{1000×5.12×0.2}{20×\mathrm{M}}$ M(observed) = 113.78
Now for ${\mathrm{CH}}_{3}\mathrm{COOH}⇌{\left({\mathrm{CH}}_{3}\mathrm{COOH}\right)}_{2}$Before association
0
After association     $1-\mathrm{\alpha }$                    $\frac{\mathrm{\alpha }}{2}$Where $\mathrm{\alpha }$ is the degree of association

## Related content

 Consent Letter – How to Write Consent Letter with Format and Samples Sarvepalli Radhakrishnan Biography Relieving Letter Format, Samples and Templates for Employee How to Write Authorization Letter with Format, Samples and Tips Value of Legal Education in India – All You Need to Know 10 Ways that Education will Improve Your Life! 10 Time Management Tips to Use in Your Exam Preparation Letter to Principal with Format and Samples What is Next Test: National Exit Test – Details, Patterns, Eligibility What is Digital Literacy, Its Importance, and Challenges in Education?  +91

Live ClassesBooksTest SeriesSelf Learning

Verify OTP Code (required)