What volume of ethanol (density = 0.7893 g/cm³) should be added to 450. mL of water in order to have a solution that freezes at -15.0°C? Assume the density of water is 1.0 g/mL. (For water, K₁= 1.86 °C/m.) Select one: O a. 371 mL O b. 470 mL O c. 212 mL O d. 132 mL O e. 167 mL (Please type answer with explanation).
What volume of ethanol (density = 0.7893 g/cm³) should be added to 450. mL of water in order to have a solution that freezes at -15.0°C? Assume the density of water is 1.0 g/mL. (For water, K₁= 1.86 °C/m.) Select one: O a. 371 mL O b. 470 mL O c. 212 mL O d. 132 mL O e. 167 mL (Please type answer with explanation).
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter14: Mixtures And Solutions
Section: Chapter Questions
Problem 120A
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What volume of ethanol (density = 0.7893 g/cm³) should be added to 450. mL of water in order to have a solution that freezes at -15.0°C? Assume the density of water is 1.0 g/mL. (For water, K₁= 1.86 °C/m.) Select one: O a. 371 mL O b. 470 mL O c. 212 mL O d. 132 mL O e. 167 mL
(Please type answer with explanation).
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VIEWStep 2: Calculation of mass of water in kg
VIEWStep 3: Calculation of molality and depression in freezing point
VIEWStep 4: Calculation of moles of ethanol
VIEWStep 5: Calculation of mass of ethanol
VIEWStep 6: Calculation of volume of ethanol
VIEWStep 7: Explanation for incorrect options
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