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What is the standard enthalpy change of reaction represented by?
What is the standard enthalpy change of reaction represented by?
- ΔH° (reaction) = ΣΔHf° (p) × ΣΔHf° (r)
- ΔH° (reaction) = ΣΔHf° (p) + ΣΔHf° (r)
- ΔH° (reaction) = ΣΔHf° (r) - ΣΔHf° (p)
- ΔH° (reaction) = ΣΔHf° (p) - ΣΔHf° (r) (correct)
What is the value of the enthalpy of formation of carbon dioxide in kJ/mol?
What is the value of the enthalpy of formation of carbon dioxide in kJ/mol?
- -241.8
- -393.5 (correct)
- -110.5
- 0
What type of process is bond-breaking?
What type of process is bond-breaking?
- Isothermal
- Endothermic (correct)
- Exothermic
- Isobaric
What is the ΔH° (reaction) value for the reaction CO (g) + H2O (g) → CO2 (g) + H2 (g)?
What is the ΔH° (reaction) value for the reaction CO (g) + H2O (g) → CO2 (g) + H2 (g)?
Under standard conditions, what is the enthalpy change of a reaction represented by?
Under standard conditions, what is the enthalpy change of a reaction represented by?
What occurs when new bonds are formed in a reaction?
What occurs when new bonds are formed in a reaction?
What is the significance of Hess's Law in measuring enthalpy changes?
What is the significance of Hess's Law in measuring enthalpy changes?
What is the unit of enthalpy change (ΔH)?
What is the unit of enthalpy change (ΔH)?
Which of the following is an example of an indirect method of measuring enthalpy changes?
Which of the following is an example of an indirect method of measuring enthalpy changes?
What is the ΔH° for the reaction 2H2(g) + O2(g) → 2H2O(g), given that H2(g) + ½O2(g) → H2O(l) ΔH° = -44kJ?
What is the ΔH° for the reaction 2H2(g) + O2(g) → 2H2O(g), given that H2(g) + ½O2(g) → H2O(l) ΔH° = -44kJ?
What is the difference between ΔH and ΔH°?
What is the difference between ΔH and ΔH°?
What is the heat of formation of a compound?
What is the heat of formation of a compound?
What is the Standard Enthalpy Change of Formation (ΔHf0) of an element in its normal physical state under standard conditions?
What is the Standard Enthalpy Change of Formation (ΔHf0) of an element in its normal physical state under standard conditions?
What type of reaction is represented by the equation Mg(s) + ½ O2(g) → MgO(s)?
What type of reaction is represented by the equation Mg(s) + ½ O2(g) → MgO(s)?
What is the sign of the enthalpy change (ΔH) for a reaction that releases heat?
What is the sign of the enthalpy change (ΔH) for a reaction that releases heat?
What is the Standard Enthalpy Change of Atomization (ΔHat0) for the reaction ½ H2(g) →H(g)?
What is the Standard Enthalpy Change of Atomization (ΔHat0) for the reaction ½ H2(g) →H(g)?
What is the Standard Enthalpy Change of Combustion (ΔHc0) for the reaction CH4 + 2O2 → CO2 + 2H2O?
What is the Standard Enthalpy Change of Combustion (ΔHc0) for the reaction CH4 + 2O2 → CO2 + 2H2O?
What is the characteristic of a reaction that has a positive enthalpy change (ΔH)?
What is the characteristic of a reaction that has a positive enthalpy change (ΔH)?
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