Chemistry
Senior High
Resolved
想請問這種題目要怎麼判斷～
6. 下列哪些現象或作用中的劃線物質為還原劑或含有還原劑成分?(應選3項)
(A) 煉鐵時在鐵礦中加入煤焦 朱金(B)鋁粉與鹽酸作用產生氫氣AN+HU-> H2
(C) 蘋果切開後置於空氣中變黑 (D) 硝酸銀水溶液加入食鹽產生白色沉澱
(E) 碳酸鈣受熱分解產生氧化鈣與二氧化碳。
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