Solution: Use the table to answer questions about bond energies. Bond                   Bond Energy (kJ/mol) C—C                           347 C=C                            611 C-H                             414 C-O                             360 C=O                            736 O-O                             142 O=O                            498 H-O                             464 i) Calculate the bond energy for breaking all the bonds in a mole of methane, CH 4 Express your answer numerically in kilojoules per mole. Change in Heat CH4 = ______ kJ/mol (ii) Calculate the bond energy for breaking all the bonds in a mole of O2 molecules? Express your answer numerically in kilojoules per mole. Change in Heat O2 = ______ kJ/mol (iii) Calculate the bond energy for forming all the bonds in a mole of water molecules, H2O Express your answer numerically in kilojoules per mole. Change in Heat H2O = ______ kJ/mol (iv) Calculate the bond energy for forming all the bonds in a mole of carbon dioxide, . Express your answer numerically in kilojoules per mole. Change in Heat CO2 = ______ kJ/mol  

Problem

Use the table to answer questions about bond energies.

Bond                   Bond Energy (kJ/mol)
C—C                           347
C=C                            611
C-H                             414
C-O                             360
C=O                            736
O-O                             142
O=O                            498
H-O                             464

i) Calculate the bond energy for breaking all the bonds in a mole of methane, CH 4

Express your answer numerically in kilojoules per mole.

Change in Heat CH4 = ______ kJ/mol

(ii) Calculate the bond energy for breaking all the bonds in a mole of O2 molecules?

Express your answer numerically in kilojoules per mole.

Change in Heat O2 = ______ kJ/mol

(iii) Calculate the bond energy for forming all the bonds in a mole of water molecules, H2O

Express your answer numerically in kilojoules per mole.

Change in Heat H2O = ______ kJ/mol

(iv) Calculate the bond energy for forming all the bonds in a mole of carbon dioxide, .

Express your answer numerically in kilojoules per mole.

Change in Heat CO2 = ______ kJ/mol