nitrogen oxide

2003

2007-02-18 9:24 pm

9.Which of the following gas(es) can be collected with a tank of water in experiments ?

(1)Methane
(2)Nitrogen oxide
(3)Nitrogen dioxide

A.(1) only
B.(1) and (2) only
C.(2) and (3) only
D.(1), (2) and (3)

nitrogen oxide 即係指所有有Natom 的oxide?
點解許呢條題目,nitrogen oxide 可以
collected with a tank of water in experiments ?

ans:B

回答 (3)

Uncle Michael

2007-02-19 3:46 am

✔ 最佳答案

Nitrogen oxide is another name of nitrogen monoxide (NO). Its meaning is entirely different from 「oxides of nitrogen」.
Both methane (CH4) and nitrogen oxide (NO) are insoluble of water, so that they can be collected over water.

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用戶149376

2007-02-20 2:48 am

因為methane同nitrogen oxide都係less denser than air
但係nitrogen dioxide就係denser than air

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用戶128130

2007-02-18 10:07 pm

因為NO2係soluble in water so 唔可以用collected over water
equation:
2NO2+H2O→HNO2+HNO3

參考: dr.samuel choung

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