當10g的純碳酸鈣與過量氫氯酸反應時，在常温常壓下可得到2.4dm3的二氧化碳。但若使用10g的不純碳酸鉅來重復實驗，則可得到2.5dm3的二氧化碳。假設所含雜質為一金屬碳酸鹽，該雜質可能是什麼?
A.MgCO3
B.ZnCO3
C.FeCO3
D.CuCO3
請詳細解釋
07 MC 20分
2008-04-24 7:29 am
回答 (1)
2008-04-24 5:23 pm
✔ 最佳答案
the answer is A.when the mass of carbonate used is equal, the smaller
molar mass means greater number of mole.
so more gas will be released.
since the molar mass of magnesium carbonate is the lowest ,
so the answer is A.
收錄日期: 2021-04-29 20:25:32
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