Question

Which of the following would have highest boiling point at
atmospheric pressure ?
A. 0.1 m NaCl
B. 0.1 m Sucrose
C. 0.1 m BaCl2
D. 0,1 m C H O.​

Answer 1

Answer:

c) 0.1 m bacl2

Explanation:

the barium chloride contians gratest numver of solute particles

Answer 2

Answer:

C. 0.1 m BaCl2

Explanation:

Electrovalent compounds( here, NaCl and BaCl2) have a higher boiling point than covalent compounds ( Sucrose and CHO) due to the presence of strong electrostatic force of attraction between the positive and negative ions/radicals. Among NaCl and BaCl2 , BaCl2 will have a higher boiling point as BaCl2 will ionize to give 3 ions namely Ba2+ and 2Cl-, whereas NaCl will ionize to give 2 ions namely Na+ and Cl-. This happens as Boiling point depends on number of ions/ atoms/solute particles.