Supercooled water is liquid water that has been cooled below its normal freezing point. This state is thermodynamically unstable and tends to freeze into ice spontaneously. Suppose we have 2 moles of supercooled water turning into ice at -10 oC and 1.0 atm. Calculate the sysS for the process of conversion of supercooled into ice. The Cp,m values of water and ice for the temperature range between 0 and -10 oC are 75.3 JK-1mol-1 and 37.7 JK-1 mol-1, respectively. Hint: a change in phase is reversible only at the temperature at which two phases are at equilibrium. Because supercooled water -10 oC and ice at -10 oC are not at equilibrium, the freezing process is not reversible. you need to consider reaching 0 oC first and than cooling to -10 oC.
Supercooled water is liquid water that has been cooled below its normal freezing point. This state is thermodynamically unstable and tends to freeze into ice spontaneously. Suppose we have 2 moles of supercooled water turning into ice at -10 oC and 1.0 atm. Calculate the sysS for the process of conversion of supercooled into ice. The Cp,m values of water and ice for the temperature range between 0 and -10 oC are 75.3 JK-1mol-1 and 37.7 JK-1 mol-1, respectively. Hint: a change in phase is reversible only at the temperature at which two phases are at equilibrium. Because supercooled water -10 oC and ice at -10 oC are not at equilibrium, the freezing process is not reversible. you need to consider reaching 0 oC first and than cooling to -10 oC.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section16.3: Measuring Dispersal Of Energy: Entropy
Problem 16.3CE
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Supercooled water is liquid water that has been cooled below its normal freezing point.
This state is
Suppose we have 2 moles of supercooled water turning into ice at -10 oC and 1.0 atm.
Calculate the sysS for the process of conversion of supercooled into ice. The Cp,m values
of water and ice for the temperature range between 0 and -10 oC are 75.3 JK-1mol-1
and 37.7 JK-1 mol-1, respectively.
Hint: a change in phase is reversible only at the temperature at which two phases are at
equilibrium. Because supercooled water -10 oC and ice at -10 oC are not at equilibrium,
the freezing process is not reversible. you need to consider reaching 0 oC first and than
cooling to -10 oC.
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