17 Questions
What is the enthalpy of fusion for the plateaus described?
$6.01 \text{ kJ/mol}$
What is the purpose of Hess's Law, as described in the text?
To determine the enthalpy change for a reaction, regardless of the number of steps
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $\text{Ca}^{2+}(\text{aq}) + 2 \text{OH}^{-}(\text{aq}) + \text{CO}{2}(\text{g}) \to \text{CaCO}{3}(\text{s}) + \text{H}_{2}\text{O}(\text{l})$?
$-96.6 \text{ kJ/mol}$
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $2 \text{HCl}(\text{g}) + \text{F}{2}(\text{g}) \to 2 \text{HF}(\text{l}) + \text{Cl}{2}(\text{g})$?
$-1015.4 \text{ kJ/mol}$
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $\text{C}(\text{s}) + \text{O}{2}(\text{g}) \to \text{CO}{2}(\text{g})$?
$-393.5 \text{ kJ/mol}$
What is the purpose of the $\Delta H_{fusion}$ and $\Delta H_{vap}$ constants mentioned in the text?
To calculate the amount of heat needed to move across temperature plateaus
What is the First Law of Thermodynamics?
The total internal energy of an isolated system is constant.
Which of the following is NOT a form of energy?
Absolute energy
If a system is isolated, what can be said about its internal energy?
It remains constant.
Which of the following is a state function?
Internal energy
In the context of thermodynamics, what is the surroundings?
The region outside the system.
What is the relationship between heat and work in an isolated system?
Heat and work can be interchanged.
What is the relationship between the change in internal energy, $\Delta E$, and the heat transferred, $q$, and work done, $w$, on a system?
$\Delta E = q + w$
Which of the following is NOT a state function?
Heat
If a system undergoes a change at constant volume, how is the change in internal energy, $\Delta E$, related to the heat transferred, $q_V$?
$\Delta E = q_V$
Which of the following is NOT a component of the universe in the context of thermodynamics?
Enthalpy
If a system undergoes a change at constant pressure, how is the change in enthalpy, $\Delta H$, related to the change in internal energy, $\Delta E$, and the work done by the system, $w_P$?
$\Delta H = \Delta E + w_P$
Learn about Thermochemistry Energy and its classifications as kinetic and potential energy. Understand the concepts of kinetic energy as the energy of motion, and potential energy as stored energy. These notes are stand-alone and can be used for teaching this topic in various classes.
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