Ecosystems

[匿名]

2011-03-08 7:59 pm

1.Which of the following 0.100 mol/L solutions has the lowest ability to remove
acid-forming gases from a mixture of gases?
A. sodium hydroxide
B. sodium chloride
C. sodium carbonate
D. ammonia

2. To identify which contains more acid—vinegar or lemon juice—neutralization with sodium hydroxide can be used. Explain how.

3. Explain why the wind from the northeastern United States often carries polluted air into Ontario and Quebec.
thx

回答 (2)

ShingMingTony

2011-03-09 1:45 am

✔ 最佳答案

1. B. Sodium chloride is nearly neutral. But sodium carbonate and ammonia are weak base while sodium hydroxide is a strong base.

2. Use a certain concentration of sodium hydroxide solution and added an amount of it to vinegar and lemon juice until the acids are neutralized. Then measure the volume of sodium hydroxide added to them respectively. The one being added more sodium hydroxide is more acidic.

3. There are sources of air pollutents, e.g. power station, factories near the northeastern US.

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知識就是力量

2011-03-09 6:04 am

Ecosystem?

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