Required Practical: Strong Acid & Strong Alkali Titration (AQA GCSE Chemistry): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the main purpose of an acid-base titration?
What is the main purpose of an acid-base titration?
To determine acid/alkali concentration
What volume of HCl is measured using a pipette in this practical?
What volume of HCl is measured using a pipette in this practical?
25 cm³
What colour is phenolphthalein in acidic conditions?
What colour is phenolphthalein in acidic conditions?
Colourless
What colour change indicates the endpoint of the titration?
What colour change indicates the endpoint of the titration?
First permanent pink colour appears
Why should the burette be rinsed with NaOH before use?
Why should the burette be rinsed with NaOH before use?
To ensure accuracy
Why is a white tile placed under the conical flask?
Why is a white tile placed under the conical flask?
To see colour change more clearly
What is the titre in a titration?
What is the titre in a titration?
Volume of NaOH used
How many concordant titres should be obtained?
How many concordant titres should be obtained?
At least three
What is the maximum difference for titres to be concordant?
What is the maximum difference for titres to be concordant?
0.20 cm³
What is plotted on the Y-axis of the results graph?
What is plotted on the Y-axis of the results graph?
Volume of NaOH required (cm³)
What correlation exists between HCl concentration and NaOH volume?
What correlation exists between HCl concentration and NaOH volume?
Positive correlation
What shape should the graph of HCl concentration vs NaOH volume show?
What shape should the graph of HCl concentration vs NaOH volume show?
Straight line