下列何者是因為反應物的接觸面積大,而使反應速率加快的實例?

109-2國二自然二段翰林習作練習

Quiz
•
Chemistry
•
8th Grade
•
Medium
唐碩振 唐碩振
Used 4+ times
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55 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
夏季的食物較易腐爛
鈉比銅更容易在空氣中燃燒
大理岩在濃鹽酸中冒泡更快
將化學藥品研磨成粉末反應速率更快
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知溴溶於水後的溴水溶液為紅棕色,該紅棕色是溴分子的顏色。溴水的可逆反應如圖所示。若要使整個溶液顏色變得更深,請問可加入下列何種物質?
食鹽水
鹽酸
氫氧化鈉
氨水
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
阿凱想要研究空氣污染對當地雨水的影響,他收集住家附近的雨水,再以不同的試紙測試雨水的酸鹼性,請問看到下列哪一種試紙的顏色變化情形,可以證明此地雨水的 pH 值偏酸性?
廣用試紙變成黃色
廣用試紙變成藍色
紅色石蕊試紙變成藍色
粉紅色氯化亞鈷試紙變成藍色
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者是酸性溶液與鹼性溶液的共同性質?
紅色石蕊試紙的顏色變化
水溶液均可以導電
皆可以分解油脂
帶有酸味
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖為小琳筆記本上記載室溫時各物質酸鹼值的情形,請問何者有誤?
甲
乙
丙
丁
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一項是酸鹼中和的反應式?
H++OH-→ H2O
H2O → H++OH-
2H2O → 2H2+O2
2H2+O2 → 2H2O
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
阿葉欲以上圖的實驗方式進行酸鹼中和實驗,以酚酞作為指示劑,將酸性溶液置於錐形瓶中,再以滴管吸取氫氧化鈉水溶液進行實驗。則下列有關此實驗的敘述何者正確?
酚酞應該加在滴管中
在實驗過程中,酸性溶液的pH值會逐漸增大
反應完成的瞬間,酸性溶液的顏色變為無色
若將反應完成的水溶液以酒精燈加熱,會完全蒸乾無殘留物
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