Acid and Base Strength and Concentration
Chemistry ⇒ Acids, Bases, and Salts
Acid and Base Strength and Concentration starts at 9 and continues till grade 12.
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See sample questions for grade 9
Context: A 0.01 M solution of NaOH and a 0.01 M solution of NH3 are prepared. Which solution will have a higher pH?
Context: A student adds the same amount of HCl and CH3COOH to equal volumes of water. Which solution will have a lower pH?
Context: A student has two solutions: Solution A is 0.1 M HCl, and Solution B is 0.1 M CH3COOH. Which solution has a higher pH?
Context: Two solutions have the same concentration, but one is a strong acid and the other is a weak acid. Which will have a higher electrical conductivity?
Define the term 'acid strength'.
Describe how you would prepare a dilute solution from a concentrated acid.
Describe the relationship between the strength of an acid and its electrical conductivity.
Describe what happens to the pH of a solution as the concentration of a strong acid increases.
Explain the difference between 'concentrated' and 'strong' when describing acids.
Explain why a concentrated solution of a weak acid may still have a higher pH than a dilute solution of a strong acid.
Explain why a dilute solution of a strong acid can still conduct electricity well.
What is the main difference between a strong acid and a weak acid?
Context: A student prepares two solutions: Solution A is 1 M HNO3 (a strong acid), and Solution B is 2 M CH3COOH (a weak acid). Which solution is expected to have a lower pH, and why?
Context: Two solutions, X and Y, both have a concentration of 0.5 M. Solution X is a strong base, while solution Y is a weak base. If equal volumes of each are added to separate samples of the same acidic solution, which solution will raise the pH more?
Describe how the pH of a solution changes if you dilute a strong acid by adding more water. Explain your answer.
Explain why a 0.01 M solution of a strong base can have a higher pH than a 1 M solution of a weak base.
