The enthalpy change when one mole of a compound is formed from its elements under standard conditions.
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What is the standard enthalpy change of combustion of 37g of 2-chlorobutane that heats 2.5dm3 of water from 20'C to 41.5'C?
-5644kJmol-1
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What is the standard enthalpy change of neutralisation of 37g of 50 cm3 of 1mol dm3 HCl and 50 cm3 of 1 mol dm3 H2SO4 when the temperature of the solution rises by 16’C?
-134.4 kJmol-1
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Given that ΔH°c of S is – 442.6 kJmol-1, ΔH°c of H2 is – 285.8 kJmol-1 and ΔH°c of H2S is – 519.1 kJmol-1, find the standard enthalpy change of formation of hydrogen sulfide.
-209.3 kJmol-1
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Given that ΔH°f of NaOH is – 426.7 kJmol-1, ΔH°f of NaBr is – 361.1 kJmol-1, ΔH°f of NaBrO3 is – 334.1 kJmol-1 and ΔH°f of H2O is – 285.8 kJmol-1, find the standard enthalpy change of the following reaction: 3Br2 + 6NaOH → 5NaBr + NaBrO3 + 3H2O.
-436.8 kJmol-1
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Given that C-H = 413kJmol-1, C-C = 347kJmol-1, C-Cl = 243kJmol-1, O-H = 463 kJmol-1, C-O = 805 kJmol-1 and H-Cl = 432 kJmol-1, find the enthalpy change of CH3CH2Cl + H2O → CH3CH2OH + HCl.
-184 kJmol-1
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Define the term Average bond enthalpy.
The energy required to break one mole of a given bond averaged over many compounds.
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How does a homogenous catalyst provide a pathway of lower activation energy?
Forms an intermediate
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What is the difference in the energy profile diagram for a reaction with a catalyst and one without?
Lower peak
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Define the term Equilibrium.
A reversible reaction in which the amount of each reactant / product remains constant.
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Write an expression for Kc for the following reversible reaction: 2NO (g) + O2 (g) -> N2O4 (g).
mol2dm-6
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Which is NOT a condition for the modern haber process?
Equal concentration of reactants and products
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Other cards in this set
Card 2
Front
Define the term Standard Enthalpy of Formation.
Back
The enthalpy change when one mole of a compound is formed from its elements under standard conditions.
Card 3
Front
What is the standard enthalpy change of combustion of 37g of 2-chlorobutane that heats 2.5dm3 of water from 20'C to 41.5'C?
Back
Card 4
Front
What is the standard enthalpy change of neutralisation of 37g of 50 cm3 of 1mol dm3 HCl and 50 cm3 of 1 mol dm3 H2SO4 when the temperature of the solution rises by 16’C?
Back
Card 5
Front
Given that ΔH°c of S is – 442.6 kJmol-1, ΔH°c of H2 is – 285.8 kJmol-1 and ΔH°c of H2S is – 519.1 kJmol-1, find the standard enthalpy change of formation of hydrogen sulfide.
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