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Chemistry
Senior High
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13.14題

3 化學需氧量是指用化學方法氧化耗氧有機化合物所需消耗氧的量,常用以表示水受到耗氧有 AV 機化合物汙染的程度。若化合物的莫耳數相同,則下列何者的化學需氧量最小? (A)CsHie A (B) C5H110H (C) C4H9CHO (D) C4H9COOH • C5H12 14. *水試樣經分析,知含0.04M鈣離子、0.04M 酸式碳酸根與0.02M 硫酸根。如欲軟化L此 硬水,應加入氫氧化鈣和碳酸鈉各若干mol? (A)0.02,0.02 (B)0.02,0.01 (C)0.04, (0.02(D)0.04,0.04。 15 ace
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