MHT CET · Chemistry · Solutions

Identify the compound amongst the following whose 0.1 M aqueous solution has the highest boiling point.

A Glucose
B Sodium chloride
C Calcium chloride
D Ferric chloride

Verified Solution

Answer & Solution

Correct Answer

(D) Ferric chloride

Step-by-step Solution

Detailed explanation

Δ T_{b} = k_{b} \times m \times i

Since they all have the same concentration, the one that will break into most parts has the highest boiling Points. Ionic compounds will ionize.

A : 1

part (covalent, does not ionize)

B : 2

parts

(1 N a, 1 C l)

C : 3

parts

(1 C a, 2 C l)

D : 4

parts

(1 F e, 3 C l)

Hence, the correct choice is Ferric chloride.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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