Problem: Calculate ΔHo for the following reaction using the given bond dissociation energiesCH4(g) + 2O2(g) → CO2(g) + 2H2O(g)BOND                                     ΔH    o (kJ/mol)O-O                                               142H-O                                               459C-H                                               411C=O                                              799O=O                                              498C-O                                               358Is the reaction endothermic or exothermic?

FREE Expert Solution
85% (371 ratings)
FREE Expert Solution

When bond energies/enthalpies are involved:

ΔHrxn = ΔHreactants - ΔHproducts

85% (371 ratings)
Problem Details

Calculate ΔHo for the following reaction using the given bond dissociation energies

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

BOND                                     ΔH    o (kJ/mol)

O-O                                               142

H-O                                               459

C-H                                               411

C=O                                              799

O=O                                              498

C-O                                               358

Is the reaction endothermic or exothermic?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Bond Energy concept. You can view video lessons to learn Bond Energy Or if you need more Bond Energy practice, you can also practice Bond Energy practice problems .

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