chem rate of reaction

2012-03-18 5:04 am

finding the rate of reaction其中一種方法係measuring the mass of the set-up before and after the experiment 為什麼這種方法不適用於hydrogen gas as product的experiment?

回答 (3)

2012-03-27 6:02 am

✔ 最佳答案

hydrogen gas produced has a negligible mass (molar mass = 1g) which is not easily measured.

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2012-03-21 9:08 am

Because Hydrogen is lighter than air .

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2012-03-18 6:04 am

唔得架咩...?係咪因為hydrogen太輕所以效果唔明顯,難以計算?
隨著reaction start,formation of hydrogen gas會減少成個set up既重量...不過hydrogen咁輕應該唔易睇出結果

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