H2(g) ---->2H(g) 呢個decomposition of hydrogen既sign of enthalpy change and entropy change應該係正定負? |
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This process at least involve the breaking of H-H bond
in the hydrogen molecules H[sub]2[/sub]. Breaking of covalent
bonds requires energy. Thus the enthalpy change of this
reaction must have a positive sign.
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多啦A夢
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由於1mole H2 gas轉成2mole 2H gas,
gas mole數多左,ramdomness會增加左,所以entropy change係+ve |
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今期流行:690是原罪
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