Question 1

One side effect of breathing ozone regularly is

Accepted Answer

Breathing ozone regularly can lead to lung disorders such as asthma and emphysema. The other options are not associated with ozone exposure.

Question 2

What is "elephant snot?"

Accepted Answer

Elephant snot refers to filamentous green algae that grows on the bottom of lakes that have experienced acidification. This term is used to describe the appearance and texture of the algae, which can resemble a slimy, snot-like substance.

Question 3

What is the lowest recorded pH of rainwater in the United State, and in which city did the rain fall?

Accepted Answer

The lowest recorded pH of rainwater in the United States is 1.5, which fell in Wheeling, WV in 1983. The other cities listed have not recorded rainwater with a pH below 4.5.

Question 4

Which of the following molecules contributes to acid rain formation in the atmosphere?

Accepted Answer

The molecule that contributes to acid rain formation is sulfur dioxide (SO2). Option B (SO₂) is the only molecule that contains sulfur dioxide. Option A (O₃) contains oxygen (O) and nitrogen (N) atoms but does not contain sulfur dioxide. Option C (CO) contains carbon (C) and oxygen (O) atoms but not sulfur dioxide. Option D (CH₄) contains carbon (C), hydrogen (H), and sulfur (S) atoms but not sulfur dioxide specifically.

Question 5

The majority of SO₂ released into the atmosphere comes from

Accepted Answer

SO₂ is the chemical formula for sulfur dioxide (SO2), which is primarily emitted from coal fired power plants. While diesel trucks and cars also emit SO2, they are not the main source. Cows and termites do not emit significant amounts of SO2.

Question 6

An acid will contain

Accepted Answer

Acids are characterized by their ability to donate a proton (H+), which is essentially a hydrogen atom that has lost its electron.

Question 7

The majority of electricity generation in the United States comes from

Accepted Answer

The majority of electricity generation in the United States comes from coal, accounting for about 23% of the total energy generation in 2019. Natural gas is the second-largest source, contributing to about 38% of the total electricity generation. Renewable sources such as wind, solar, and hydroelectric power have been growing in recent years, but still account for a smaller share of electricity generation compared to coal and natural gas. Nuclear energy contributes to about 20% of the total electricity generation. Petroleum accounts for only a small fraction of electricity generation in the United States.

Question 8

Which of the following compounds is used to remove SO₂ from flue gases in coal-fired power plants?

Accepted Answer

CaCO3 is used in coal-fired power plants to remove sulfur dioxide (SO2) from flue gases by reacting with it to form solid calcium sulfate (CaSO4) and water (H2O).

Question 9

The pH of solution 1.0 × 10^-⁶ M H⁺ is _____.

Accepted Answer

The answer of The pH of solution 1.0 × 10^-⁶...

Question 10

Most nitrogen in the nitrogen cycle exists in the

Accepted Answer

According to the nitrogen cycle, nitrogen gas (N2) is the most abundant form of nitrogen in the atmosphere, making up about 78% of the air we breathe. Therefore, the correct answer is A (air).

Question 11

The pH of natural, clean rainwater is neutral.

Accepted Answer

Natural, clean rainwater has a pH around 5.6, making it slightly acidic due to the dissolution of carbon dioxide in the water, forming carbonic acid.

Question 12

The pH of solution 7.8 *10^-⁵ M H⁺ is _____.

Accepted Answer

The answer of The pH of solution 7.8 *10^-⁵ M...

Question 13

_____ is the chemical reaction that takes place in many flue gas desulfurization processes.

Accepted Answer

The answer of _____ is the chemical reaction that takes...

Question 14

Pure water contains ions.

Accepted Answer

Pure water undergoes a small degree of self-ionization, producing hydronium (H3O+) and hydroxide (OH−) ions, making it slightly conductive.

Question 15

The pH of solution 5.6 × 10^-⁴ M H⁺ is _____.

Accepted Answer

The answer of The pH of solution 5.6 × 10^-⁴...

Question 16

A solution that has a pH of 10.2 would be considered an acidic solution.

Accepted Answer

A solution with a pH of 10.2 is basic, not acidic. A solution with a pH between 0 and 7 is acidic, a pH of 7 is neutral, and a pH between 7 and 14 is basic.

Quiz 10: Ph and Acid Rain Acid Rain and Our Environment