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Bond Energies & Enthalpies

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Estimate the change in enthalpy, Delta H, for the following reaction:

H2(g) + Cl2(g) --> 2 HCl(g)

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Solution Summary

The expert estimated the change in enthalpy, delta H and reactions.

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To work this problem, think of the reaction in terms of simple steps:

1. First, the reactant molecules, H2 and Cl2, break down into their atoms

H2(g) --> 2 H(g)
Cl2(g) --> 2 Cl(g)

2. Next, these atoms combine to form HCl molecules

2 H(g) + 2 ...

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