Expert Chemistry Tutoring

Q1. Knowledge Recall (1 mark):

Define potable water.

Q2. Application (2 marks):

Explain how chlorination can be used to make water potable.

Q3. Data Analysis (3 marks):

The concentration of lead in a sample of drinking water is 0.001 mg/L. Calculate the concentration in ppm.

Q4. Knowledge Recall (1 mark):

Name two sources of potable water.

Q5. Application (2 marks):

Explain how filtration can be used to remove impurities from water.

Q6. Calculation (4 marks):

Calculate the pH of a 0.1 M solution of hydrochloric acid (HCl).

Q7. Knowledge Recall (1 mark):

What is the name of the chemical process that removes hardness from water?

Q8. Application (2 marks):

Explain how boiling can temporarily make hard water soft.

Q9. Chemical Equation (3 marks):

Write a word equation for the reaction between sodium hydroxide and sulfuric acid.

Q10. Data Analysis (3 marks):

The table below shows the results of a water quality test:

Is the water sample suitable for drinking? Explain your answer.