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Crank
3 years ago
9

Which of the following is NOT a sign of a chemical reaction:

Chemistry
2 answers:
Sergeeva-Olga [200]3 years ago
7 0
The answer is B. Precipitation
Liono4ka [1.6K]3 years ago
3 0
I think it’s B. I apologize if I was incorrect.
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In the first distillation this week, Hexane from the original solvent makes a larger contribution to the vapor pressure of the mixture.

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Hence between hexane and toluene, because of more vapor pressure of hexane and lower boiling point, it will easily evaporate and exerts pressure.

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To learn more about vapor pressure and hexane, visit: brainly.com/question/28206662

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