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Determine if chemical equation is exothermic or endothermic? |
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| Feb23-13, 07:45 AM | #1 |
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Determine if chemical equation is exothermic or endothermic?
How would I determine, if given a chemical equation is exothermic or endothermic?
Eg. Mg + 2HCL[itex]\rightarrow[/itex]MgCl2 + H2 |
| Feb23-13, 08:51 AM | #2 |
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Experimentally, or browsing tables.
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| Feb23-13, 10:24 AM | #3 |
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Recognitions:
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Look up the enthalpies of formation of the reactants and products then apply Hess's Law: https://en.wikipedia.org/wiki/Hess%27s_law
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