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The graph represents the change in pH in the reaction flask when A - VCE - SSCE Chemistry - Question 1 - 2010 - Paper 1
Question 1
The graph represents the change in pH in the reaction flask when A. a weak acid is added to a strong base. B. a weak base is added to a strong acid. C. a strong acid... show full transcript
Worked Solution & Example Answer:The graph represents the change in pH in the reaction flask when A - VCE - SSCE Chemistry - Question 1 - 2010 - Paper 1
Step 1
a strong acid is added to a weak base.
Answer
When a strong acid is added to a weak base, the pH of the solution will decrease significantly. This is because the strong acid will dissociate completely in solution, providing a high concentration of hydrogen ions (H+). As the weak base cannot neutralize all the added H+, the resultant solution will have a lower pH indicating increased acidity.