Core practical - 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 aim of this titration practical?
What is the main aim of this titration practical?
Find volume of alkali to neutralise acid
What volume of acid is measured using the pipette?
What volume of acid is measured using the pipette?
What is the purpose of the burette in this practical?
What is the purpose of the burette in this practical?
Holds alkali and allows drop by drop addition
Why is a white tile placed under the conical flask?
Why is a white tile placed under the conical flask?
To see colour changes clearly
What colour is phenolphthalein indicator in acidic solution?
What colour is phenolphthalein indicator in acidic solution?
Colourless
What colour change shows the end point when using phenolphthalein?
What colour change shows the end point when using phenolphthalein?
Colourless to pink
Why must alkali be added drop by drop near the end point?
Why must alkali be added drop by drop near the end point?
Gives more accurate results
What are concordant results in titration?
What are concordant results in titration?
Results within of each other
How many decimal places should burette readings be recorded to?
How many decimal places should burette readings be recorded to?
2 decimal places
Why use a pipette instead of a measuring cylinder?
Why use a pipette instead of a measuring cylinder?
Pipette measures volumes more accurately
Why use phenolphthalein rather than universal indicator?
Why use phenolphthalein rather than universal indicator?
Gives sharp, clear colour change
Why must the burette be rinsed with sodium hydroxide solution before use?
Why must the burette be rinsed with sodium hydroxide solution before use?
Prevents dilution affecting results