COMEDK · Chemistry · 17. Solutions
Which of the following solutions will exhibit highest boiling point?
- A \(0.01 \mathrm{M} \mathrm{Na}_{2} \mathrm{SO}_{4}(a q)\)
- B \(0.01 \mathrm{M} \mathrm{KNO}_{3}(a q)\)
- C \(0.015 \mathrm{M}\) urea \((a q)\)
- D \(0.015 \mathrm{M}\) glucose \((a q)\)
Answer & Solution
Correct Answer
(A) \(0.01 \mathrm{M} \mathrm{Na}_{2} \mathrm{SO}_{4}(a q)\)
Step-by-step Solution
Detailed explanation
For, assume complete dissociation For \(\mathrm{Na}_{2} \mathrm{SO}_{4} ; \quad i=3, m=0.01\) \[ \begin{aligned} &\Delta T_{b}=i K_{b} m \\ &\Delta T_{b}=3 \times K_{b} \times 0.01=0.03 K_{b} \end{aligned} \] For, 0.01 M \(\mathrm{KNO}_{3}\);…
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