Acid Rain and Its Effects

The video explains how burning fossil fuels leads to acid rain, which is more acidic than natural rain due to sulfuric and nitric acids. It details the chemical processes forming these acids and their environmental impacts, such as soil degradation and harm to living organisms. The video also covers the pH scale, illustrating how acid rain is significantly more acidic than normal rain.

What are the two main acids that contribute to acid rain?

• Sulfuric acid and hydrochloric acid

• Nitric acid and acetic acid

• Carbonic acid and sulfuric acid

• Sulfuric acid and nitric acid

What is the natural pH level of rain due to carbonic acid?

• pH 7

• pH 6

• pH 3

• pH 5

How much more acidic is rain with a pH of 3 compared to a pH of 6?

• 1000 times

• 500 times

• 100 times

• 10 times

What is the sulfur content range in coal and oil by weight?

• 0.1% to 0.5%

• 1% to 4%

• 5% to 10%

• 10% to 15%

What gas is formed when sulfur dioxide reacts with more oxygen in the presence of sunlight?

• Sulfur hexafluoride

• Sulfur tetrafluoride

• Sulfur trioxide

• Sulfur monoxide

What percentage of nitrogen is present in the air used for combustion in vehicles?

• 80%

• 70%

• 90%

• 60%

What happens to nitrogen oxides once they are in the air?

• They become inert

• They form nitrogen gas

• They dissolve in rainwater to form nitric acid

• They react with sulfur dioxide

Why do living organisms struggle to grow in acidic conditions?

• Lack of sunlight

• Excessive moisture

• Too much oxygen

• Enzymes cannot function properly

What happens to toxic metals in acidic soil?

• They become insoluble

• They become soluble

• They evaporate

• They become inert

What essential metal ions are displaced by hydrogen ions in acid rain?

• Sodium, potassium, and iron

• Potassium, magnesium, and calcium

• Calcium, zinc, and copper

• Magnesium, sodium, and lead