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artiomtyler007
12.02.2022 •
Chemistry
Translate the word phrase into an algebraic equation and solve: x more than twenty-one is equal to forty-one.
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Ответ:
B. -5.58°C.
Explanation:
Hello!
In this case, since the freezing point depression is computed as follows:
Whereas i=1 as the van't Hoff's factor of sugar (nonionizing solute), m=3mol/1kg=3mol/kg as the molality and Kf=1.86 °C/(mol/kg) as the freezing point depression constant for water. In such a way, we plug in to obtain:
Now, since the freezing point of pure water is 0°C, we infer that freezing point of such solution is:
B. -5.58°C.
Best regards!