Required Practical 9 (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What is the aim of Required Practical 9?
What is the aim of Required Practical 9?
Investigate pH changes in weak acid/strong base reactions
Which buffer solutions are used to calibrate the pH probe?
Which buffer solutions are used to calibrate the pH probe?
pH 4.00, 7.00 and 9.20
What are the axes for the pH probe calibration graph?
What are the axes for the pH probe calibration graph?
x: recorded pH, y: known pH values
What concentration of ethanoic acid is used in this practical?
What concentration of ethanoic acid is used in this practical?
mol dm
What volume of ethanoic acid is transferred to the beaker?
What volume of ethanoic acid is transferred to the beaker?
Exactly cm
What volume of is added initially at each increment?
What volume of is added initially at each increment?
cm
What volume increment is used as the endpoint approaches?
What volume increment is used as the endpoint approaches?
cm
What type of water is used to rinse the pH probe?
What type of water is used to rinse the pH probe?
Deionised (distilled) water
How are the pH readings corrected during data analysis?
How are the pH readings corrected during data analysis?
Use pH probe calibration graph
How should data points be connected on the final pH graph?
How should data points be connected on the final pH graph?
Form a smooth curve
