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Fill in the blank with the correct word.
The elevation of boiling point of solution is ___________ that of urea solution. The elevation of…
The elevation of boiling point of $0\cdot5\text{ M K}_2\text{SO}_4$ solution is ___________ that of $0\cdot5\text{ M}$ urea solution. The elevation of boiling point of $0\cdot5\text{ M KCl}$ solution is __________ that of $0\cdot5\text{ M K}_2\text{SO}_4$ solution.
Answer
Answer
AIBlanks: more than; less than
more than; less than. Boiling point elevation depends on the number of particles: $\mathrm{K_2SO_4}$ gives 3 ions ($i=3$), urea 1 ($i=1$), KCl 2 ions ($i=2$).
From ISC 2019 Chemistry Paper 1, question 1(a)(i).