A certain substance X melts at a temperature of -5.5 °C. But if a 600. g sample of X is prepared with 15.79 g of urea ((NH2),CO dissolved in it, the sample is found to have a melting point of – 8.5 °C instead. Calculate the molal freezing point depression constant K, of X.

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
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A certain substance X melts at a temperature of -5.5 °C. But if a 600. g sample of X is prepared with 15.79 g of urea
((NH2),CO) dissolved in it, the sample is found to have a melting point of – 8.5 °C instead. Calculate the molal freezing
point depression constant K, of X.
Be sure your answer has the correct number of significant digits.
- 1
I°C- mol-kg
Transcribed Image Text:A certain substance X melts at a temperature of -5.5 °C. But if a 600. g sample of X is prepared with 15.79 g of urea ((NH2),CO) dissolved in it, the sample is found to have a melting point of – 8.5 °C instead. Calculate the molal freezing point depression constant K, of X. Be sure your answer has the correct number of significant digits. - 1 I°C- mol-kg
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