When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 2.54 g of CuSO4(s) are dissolved in 104.70 g of water, the temperature of Cardboard or Styrofoam lid the solution increases from 25.03 to 27.70 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to Nested be 1.55 J/°C. Styrofoam cups Based on the student's observation, calculate the enthalpy of dissolution of CuSO,(s) in kJ/mol. Reaction occurs in solution. Assume the specific heat of the solution is equal to the specific heat of water. C Ca AHdissolution kJ/mol Submit Answer Retry Entire Group 6 more group attempts remaining
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 2.54 g of CuSO4(s) are dissolved in 104.70 g of water, the temperature of Cardboard or Styrofoam lid the solution increases from 25.03 to 27.70 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to Nested be 1.55 J/°C. Styrofoam cups Based on the student's observation, calculate the enthalpy of dissolution of CuSO,(s) in kJ/mol. Reaction occurs in solution. Assume the specific heat of the solution is equal to the specific heat of water. C Ca AHdissolution kJ/mol Submit Answer Retry Entire Group 6 more group attempts remaining
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
Section: Chapter Questions
Problem 7QAP: Magnesium sulfate is often used in first-aid hot packs, giving off heat when dissolved in water. A...
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Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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When a solid dissolves in water, heat may be evolved or absorbed.
The heat of dissolution (dissolving) can be determined using a
coffee cup
calorimeter.
Thermometer
In the laboratory a general chemistry student finds that when 2.54 g
of CuSO4(s) are dissolved in 104.70 g of water, the temperature of
Cardboard or
Styrofoam lid
the solution increases from 25.03 to 27.70 °C.
The heat capacity of the calorimeter (sometimes referred to as the
calorimeter constant) was determined in a separate experiment to
Nested
be 1.55 J/°C.
Styrofoam cups
Based on the student's observation, calculate the enthalpy of
dissolution of CuSO,(s) in kJ/mol.
Reaction
occurs in
solution.
Assume the specific heat of the solution is equal to the specific
heat of water.
BkC Cngge Lng
AHdissolution
kJ/mol
Submit Answer
Retry Entire Group
6 more group attempts remaining
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