Question

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calculate the heat of reaction δh for the following reaction:
2ch₄(g) + 3o₂(g)→2co(g) + 4h₂o(g)
you can find a table of bond energies by using the data button on the aleks toolbar.
round your answer to the nearest kj/mol.

Explanation:

Step1: List bond energies (typical values)

Bond energies (kJ/mol): C-H=413, O=O=498, C≡O=1072, O-H=464

Step2: Calculate energy to break bonds

2 CH₄: 2×4×413 = 3304; 3 O₂: 3×498=1494
Total breaking: 3304+1494=4798

Step3: Calculate energy to form bonds

2 CO: 2×1072=2144; 4 H₂O:4×2×464=3712
Total forming: 2144+3712=5856

Step4: Compute ΔH

ΔH = breaking - forming = 4798 - 5856 = -1058

Answer:

-1058