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Questions and Answers
What is the enthalpy of fusion for the plateaus described?
What is the enthalpy of fusion for the plateaus described?
- $-96.6 \text{ kJ/mol}$
- $-16.2 \text{ kJ/mol}$
- $40.67 \text{ kJ/mol}$
- $6.01 \text{ kJ/mol}$ (correct)
What is the purpose of Hess's Law, as described in the text?
What is the purpose of Hess's Law, as described in the text?
- To relate the enthalpies of formation of products and reactants
- To calculate the enthalpy of vaporization for a substance
- To calculate the amount of heat needed to move across temperature plateaus
- To determine the enthalpy change for a reaction, regardless of the number of steps (correct)
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $\text{Ca}^{2+}(\text{aq}) + 2 \text{OH}^{-}(\text{aq}) + \text{CO}{2}(\text{g}) \to \text{CaCO}{3}(\text{s}) + \text{H}_{2}\text{O}(\text{l})$?
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $\text{Ca}^{2+}(\text{aq}) + 2 \text{OH}^{-}(\text{aq}) + \text{CO}{2}(\text{g}) \to \text{CaCO}{3}(\text{s}) + \text{H}_{2}\text{O}(\text{l})$?
- $-16.2 \text{ kJ/mol}$
- $-96.6 \text{ kJ/mol}$ (correct)
- $-65.3 \text{ kJ/mol}$
- $+178.1 \text{ kJ/mol}$
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $2 \text{HCl}(\text{g}) + \text{F}{2}(\text{g}) \to 2 \text{HF}(\text{l}) + \text{Cl}{2}(\text{g})$?
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $2 \text{HCl}(\text{g}) + \text{F}{2}(\text{g}) \to 2 \text{HF}(\text{l}) + \text{Cl}{2}(\text{g})$?
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $\text{C}(\text{s}) + \text{O}{2}(\text{g}) \to \text{CO}{2}(\text{g})$?
What is the enthalpy change, $\Delta H_{rxn}$, for the reaction: $\text{C}(\text{s}) + \text{O}{2}(\text{g}) \to \text{CO}{2}(\text{g})$?
What is the purpose of the $\Delta H_{fusion}$ and $\Delta H_{vap}$ constants mentioned in the text?
What is the purpose of the $\Delta H_{fusion}$ and $\Delta H_{vap}$ constants mentioned in the text?
What is the First Law of Thermodynamics?
What is the First Law of Thermodynamics?
Which of the following is NOT a form of energy?
Which of the following is NOT a form of energy?
If a system is isolated, what can be said about its internal energy?
If a system is isolated, what can be said about its internal energy?
Which of the following is a state function?
Which of the following is a state function?
In the context of thermodynamics, what is the surroundings?
In the context of thermodynamics, what is the surroundings?
What is the relationship between heat and work in an isolated system?
What is the relationship between heat and work in an isolated system?
What is the relationship between the change in internal energy, $\Delta E$, and the heat transferred, $q$, and work done, $w$, on a system?
What is the relationship between the change in internal energy, $\Delta E$, and the heat transferred, $q$, and work done, $w$, on a system?
Which of the following is NOT a state function?
Which of the following is NOT a state function?
If a system undergoes a change at constant volume, how is the change in internal energy, $\Delta E$, related to the heat transferred, $q_V$?
If a system undergoes a change at constant volume, how is the change in internal energy, $\Delta E$, related to the heat transferred, $q_V$?
Which of the following is NOT a component of the universe in the context of thermodynamics?
Which of the following is NOT a component of the universe in the context of thermodynamics?
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, $w_P$?
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, $w_P$?
