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Thermochemical Equations

Chemistry ⇒ Thermochemistry and Energetics

Thermochemical Equations starts at 10 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Thermochemical Equations. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
Describe how you would write a thermochemical equation for the neutralization of hydrochloric acid with sodium hydroxide.
Describe the difference between a thermochemical equation and a standard chemical equation.
Describe the significance of the sign of ΔH in a thermochemical equation.
Describe the steps to calculate the enthalpy change for a reaction using a thermochemical equation and a given amount of reactant.
Explain why it is important to specify the temperature and pressure when writing a thermochemical equation.
Explain why the enthalpy change for a reaction depends on the physical states of the reactants and products.
Explain why the enthalpy change for a reaction is considered an extensive property.
Given the thermochemical equation: 2SO2(g) + O2(g) → 2SO3(g); ΔH = -198 kJ, what is the enthalpy change for the formation of 1 mole of SO3(g)?
Given the thermochemical equation: C(s) + O2(g) → CO2(g); ΔH = -394 kJ, what is the enthalpy change when 2 moles of carbon are burned?
Given the thermochemical equation: H2(g) + Cl2(g) → 2HCl(g); ΔH = -184 kJ, what is the enthalpy change for the formation of 1 mole of HCl(g)?
Given the thermochemical equation: N2(g) + 3H2(g) → 2NH3(g); ΔH = -92 kJ, what is the enthalpy change for the formation of 1 mole of NH3(g)?
If the thermochemical equation for the combustion of carbon monoxide is 2CO(g) + O2(g) → 2CO2(g); ΔH = -566 kJ, what is the enthalpy change for the combustion of 1 mole of CO(g)?
If the thermochemical equation for the decomposition of calcium carbonate is CaCO3(s) → CaO(s) + CO2(g); ΔH = +178 kJ, is the reaction endothermic or exothermic?
If the thermochemical equation for the formation of water is 2H2(g) + O2(g) → 2H2O(l); ΔH = -572 kJ, what is the enthalpy change for the formation of 1 mole of water?
What is a thermochemical equation?
Write the thermochemical equation for the combustion of methane, CH4(g), given that ΔH = -890 kJ/mol.