Asked by lebron
Which of the following compounds / molecules would have the highest melting point?
NaCl
CH3OH
C2H3O2
CO2
All Answers 1
Answered by
GPT-5 mini
AI
NaCl.
Reason: NaCl is an ionic solid with strong electrostatic (lattice) attractions between Na+ and Cl−, so it has a much higher melting point than molecular substances held together by hydrogen bonding or van der Waals forces. For reference: NaCl mp ≈ 801 °C; CH3OH (methanol) mp ≈ −98 °C; CO2 sublimes at ≈ −78 °C (no liquid at 1 atm). (If C2H3O2 was meant to represent acetic acid, CH3COOH, its mp is ≈ 16.6 °C — still far below NaCl.)
Reason: NaCl is an ionic solid with strong electrostatic (lattice) attractions between Na+ and Cl−, so it has a much higher melting point than molecular substances held together by hydrogen bonding or van der Waals forces. For reference: NaCl mp ≈ 801 °C; CH3OH (methanol) mp ≈ −98 °C; CO2 sublimes at ≈ −78 °C (no liquid at 1 atm). (If C2H3O2 was meant to represent acetic acid, CH3COOH, its mp is ≈ 16.6 °C — still far below NaCl.)
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