When KNO3 dissolves in water the system temperature is expected to: 1 a. Remain the same O b. Need more information O c. Increase O d. Decrease

Chemistry & Chemical Reactivity
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ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter13: Solutions And Their Behavior
Section: Chapter Questions
Problem 87IL: A solution of benzoic acid in benzene has a freezing point of 3.1 C and a boiling point of 82.6 C....
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When KNO3 dissolves in water the system
temperature is expected to:
1
a. Remain the same
O b. Need more information
O c. Increase
O d. Decrease
A certain liquid has a normal boiling point of
144 °C. At what temperature (in °C) does it
boil if the pressure is 0.5 atm? Given
that AH°vap equals 23.09 kJ/mol and R=8.314
J/K.mol.
2
O a. 392
O b. 75
O c. 378
O d. 105
O e. 164
O f. 93
Heating mantle is used for:
a. Heating liquids in beakers uniformly
b. Heating liquids in round bottom
flasks uniformly
c. Heating liquids in graduated cylinders
uniformly
d. Heating liquids in test tubes
uniformly
Transcribed Image Text:When KNO3 dissolves in water the system temperature is expected to: 1 a. Remain the same O b. Need more information O c. Increase O d. Decrease A certain liquid has a normal boiling point of 144 °C. At what temperature (in °C) does it boil if the pressure is 0.5 atm? Given that AH°vap equals 23.09 kJ/mol and R=8.314 J/K.mol. 2 O a. 392 O b. 75 O c. 378 O d. 105 O e. 164 O f. 93 Heating mantle is used for: a. Heating liquids in beakers uniformly b. Heating liquids in round bottom flasks uniformly c. Heating liquids in graduated cylinders uniformly d. Heating liquids in test tubes uniformly
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