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Rate_4

Authored by Momo Chang

Chemistry

11th - 12th Grade

Used 2+ times

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5 questions

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1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

反應Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

欲使速率增加,下列方法哪些有效?

溫度升高

加入MgCl2

將鎂磨成更細的粉狀

增加總壓

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

麵粉工廠強調「嚴禁煙火」,主要原因與

鐵釘和鐵粉與稀鹽酸反應產生氫氣的速率

為鐵粉較快相同。

正確

錯誤

3.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

某生進行秒錶反應,

配製A溶液(每升溶液含KIO3 6.42克);

B溶液(每升溶液含NaHSO3 4.16克),

並加入澱粉和硫酸進行實驗,

會呈藍色的是哪幾次?

1 mL A + 4 mL B

2 mL A + 4 mL B

3 mL A + 4 mL B

4 mL A + 4 mL B

4.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

某生進行秒錶反應,呈藍色為澱粉與碘生成錯合物所造成。

正確

錯誤

5.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

某生進行秒錶反應,可來自

0.01莫耳Na2S2O5加水製得

0.02莫耳的NaHSO3

正確

錯誤

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