Multiple ChoiceThe oxidation of ammonia is illustrated by the following equation:4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (g)Calculate the enthalpy of reaction, ΔHRxn, based on the given standard heats of formation. 2754views1rank
Multiple ChoiceConsider the following equation: 2 ClF3(g) + 2 NH3(g) → 1 N2(g) + 6 HF (g) + 6 Cl2(g) ΔHrxn = –1196 kJDetermine the standard enthalpy of formation for chlorine trifluoride, ClF3. 3559views1rank3comments
Multiple ChoiceFind ΔHrxn for the following reaction: N2 + 2 O2 → 2 NO2Based on the following data. 2 NO → N2 + O2 ΔH = −180 kJ 2 NO + O2 → 2 NO2 ΔH = −112 kJ443views
Multiple ChoiceUsing standard thermodynamic data, calculate ΔH°rxn for the following: 2 C2H2 (g) + 5 O2 (g) → 4 CO2 (g) + 2 H2O (l)398views
Open QuestionCalculate the enthalpy of the reaction 2NO(g) + O2(g) → 2NO2(g) given the following reactions and enthalpies of formation: 12N2(g) + O2(g) → NO2(g), δH∘a=33.2 kJ 12N2(g) + 12O2(g) → NO(g), δH∘b=90.2 kJ886views
Open QuestionWhat is the isobaric heat of combustion for ethane, C2H6(g), in kJ per mole of ethane at 298.15 k?295views
Open QuestionWhat is the heat of combustion of ethane, C2H6, in kilojoules per mole of ethane? Enthalpy of formation values can be found in this list of thermodynamic properties.288views
Open QuestionUse standard enthalpies of formation to calculate δh∘rxn for the following reaction: 2 H2S(g) + 3 O2(g)→ 2 H2O(l) + 2SO2(g)349views
Open QuestionFor which one of the following is the enthalpy of the reaction the same as the enthalpy of formation?516views
Open QuestionUse the molar bond enthalpy data in the table to estimate the value of δ𝐻∘rxn for the equation528views
Open QuestionFor which one of the following reactions is δh°rxn equal to the heat of formation of the product?502views
Open QuestionCalculate the heat evolved per mole on combustion of each substance to yield co2(g) and h2o(g).564views
Open QuestionCalculate the enthalpy of the reaction 2NO(g) + O2(g) → 2NO2(g) given the following reactions and enthalpies of formation: 1/2N2(g) + O2(g) → NO2(g), ΔH∘a=33.2 kJ 1/2N2(g) + 1/2O2(g) → NO(g), ΔH∘b=90.2 kJ436views
Open QuestionUsing the table below, estimate δh for the "water splitting reaction": H2O(g) → H2(g) + 12 O2(g).357views
Open QuestionWhich answer best describes the transfer of heat that occurs when 1.20 mol of H2 reacts?244views
Open QuestionWhich answer best describes the transfer of heat that occurs when 1.70 mol of H2 reacts?263views
Open QuestionWhich answer best describes the transfer of heat that occurs when 1.40 mol of H2 reacts?248views
Open QuestionIn many ways, hydrogen as a biofuel compares very favorably to ethanol and other fuels.258views
Open QuestionWhich answer best describes the transfer of heat that occurs when 1.30 mol of H2 reacts?229views
Open QuestionWhat is the change in enthalpy associated with the combustion of 530 g of methane (CH4)?375views
Open QuestionThe enthalpy of the reaction is –2,840 kJ. What is the heat of combustion, per mole, of glucose?286views
Open QuestionUse standard enthalpies of formation to calculate ΔH°rxn for the reaction: CO(g) + H2O(g) → H2(g) + CO2(g)
Open QuestionUse standard enthalpies of formation to calculate ΔH° for the reaction: C(s) + H2O(g) → CO(g) + H2(g).
Open QuestionHydrogen and methanol have both been proposed as alternatives to hydrocarbon fuels. Use standard enthalpies of formation to calculate the amount of heat released per kilogram of methanol fuel and per kilogram of hydrogen fuel.
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