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This quiz contains 10 questions from a mix of 1 subtopics.
Average bond enthalpies are worked out by calcuating the average energy required to...
form a specific type of bond in a large number of compounds
break a specific type of bond in a large number of compounds
form all of the bonds in a large number of compounds
break all of the bonds in a large number of compounds
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In the reaction C2H6(g) + Br2(g) ➔ C2H5Br(g) + HBr(g), which bonds need to be broken in the reactants?
C-Br and H-Br
C-C and Br-Br
C-C and C-H
C-H and Br-Br
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In the reaction C2H6(g) + Br2(g) ➔ C2H5Br(g) + HBr(g), which bonds need to be formed in the products?
C-C and C-H
C-H and Br-Br
C-C and Br-Br
C-Br and H-Br
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Calculate the total energy REQUIRED to break all of the reactant bonds in the following reaction:
C2H6(g) + Cl2(g) ➔ C2H5Cl(g) + HCl(g)
Use the average bond enthalpy data below.
kJ mol-1
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In the following reaction, C-C bonds, C-H bonds, and O=O bonds are broken.
C3H8(g) + 5O2(g) ➔ 3CO2(g) + 4H2O(g)
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In the following reaction, C=O bonds, and O-H bonds are formed.
C3H8(g) + 5O2(g) ➔ 3CO2(g) + 4H2O(g)
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Calculate ΔrH for the following reaction using the average bond enthalpy data below.
C3H8(g) + 5O2(g) ➔ 3CO2(g) + 4H2O(g)
kJ mol-1
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Calculate the total energy RELEASED in making all of the product bonds in the following reaction:
C2H6(g) + Cl2(g) ➔ C2H5Cl(g) + HCl(g)
Use the average bond enthalpy data below.
kJ mol-1
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Calculate ΔHr for the following reaction using the average bond enthalpy data below.
C2H6(g) + Cl2(g) ➔ C2H5Cl(g) + HCl(g)
kJ mol-1
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What is mean bond enthalpy?
the average energy released when 1 mole of a specific type of covalent bond is formed in gaseous molecules
the average energy required to break 1 mole of a specific type of covalent bond in gaseous molecules
the energy required to break a covalent bond
the energy given out when a covalent bond is formed
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