Chemistry and the Environment

Where acids, bases and organic compounds come from, and what they do to the environment.

9 questions, free, marked as you go with a worked explanation on every one.

What this covers

• acid deposition

The questions

1. A lake sample has a hydrogen ion concentration of 1.0 × 10⁻⁵ mol/L. What is its pH?
2. What is the main cause of acid deposition?
3. How does acid deposition damage a lake ecosystem?
4. Which are ways to reduce the environmental impact of chemical processes? Select all that apply.
5. Why are some organic compounds of particular environmental concern?
6. Assessing whether to use a chemical process requires weighing risks and benefits. Which statement best reflects that?
7. A 2.0 kg sample of water drawn from a rural well is analysed and found to contain 0.010 g of dissolved lead. What is the lead concentration, in parts per million?
8. A coal-fired generating station releases the sulfur dioxide that drives acid deposition downwind. Which of the following measures would actually reduce the amount of acid-forming gas the station releases? Select all that apply.
9. Use the table. Which sample shows evidence of acid deposition?

Answer these free