Problem: Consider the following chemical equation:2A + B → C        ΔHrxn = 128 JWhat is ΔHrxn for the reaction:2C → 4A + 2BExpress your answer in joules to three significant figures.

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Given Reaction:     2A + B → C        ΔHrxn = 128 J

2C → 4A + 2B    ΔHrxn = ?


Step 1: Reverse reaction, reverse the sign of ΔHrxn

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Problem Details

Consider the following chemical equation:

2A + B → C        ΔHrxn = 128 J

What is ΔHrxn for the reaction:

2C → 4A + 2B

Express your answer in joules to three significant figures.

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