Air and Water

Question 1

Describe test for water

Answer 1

CuSO4 + 5H(2)O - CuSO(4)5H(2)0

Anhydrous copper sulfate + water - hydrated copper sulfate

Question 2

Describe the purification of water by filtration and chlorination

Answer 2

Chlorine is added to drinking water to sterilize it. The chlorine kills microbes
-The water is sprayed onto specially-prepared layers of sand and gravel called filter beds.

Question 3

What are the common air pollutants?

Answer 3

Carbon monoxide, sulfur dioxide and oxides of nitrogen

Question 4

Describe the sources of carbon monoxide

Answer 4

• Incomplete combustion

A poisonous gas that combines hemoglobin in the blood that carry O2 around the body

Question 5

Describe the sources of sulfur dioxides

Answer 5

• When fossil fuels are burned in the air - gets oxidized

- Volcanoes

Question 6

Describe the sources of nitrogen oxides

Answer 6

• In car engines

- High temperature furnaces

Question 7

Sate the effect of carbon monoxide on health

Answer 7

A poisonous gas that combines hemoglobin in the blood that carry O2 around the body. If you get carbon monoxide poisoning, the respiration in your cells will stop.

Question 8

Outline the negative effects of acid rain on the environement

Answer 8

• Lakes and rivers become acidic - fishes and aquatic plants may die
• Soil may become too acidic to grow crop plants
• Building made from carbonate rocks will be eroded

Question 9

Describe the source of carbon dioxide

Answer 9

• Burning of fossil fuels
• ## Industrial processes such as thermal decomposition

Question 10

Describe the displacement of ammonia from its salts by warming with an alkali.

Answer 10

Farmers sometimes add lime to the soil to neutralize the acidity in the soil - formed slaked lime, calcium hydroxide
The stronger alkali displaces ammonia from ammonium salts.

Question 11

What is the catalyst for the Haber process?

Answer 11

Iron

Question 12

What are the conditions for the Haber process?

Answer 12

450C and 200 atmospheres