Required Practical: Strong Acid & Strong Alkali Titration (OCR GCSE Chemistry A (Gateway Science Suite)): 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 volume of HCl is measured using a pipette for this titration?
What volume of HCl is measured using a pipette for this titration?
25
What colour is phenolphthalein in the HCl solution at the start?
What colour is phenolphthalein in the HCl solution at the start?
Colourless
Why is a white tile placed under the conical flask?
Why is a white tile placed under the conical flask?
To see the colour change more clearly
What colour indicates the endpoint of the titration?
What colour indicates the endpoint of the titration?
Permanent pink
What is the 'titre' in a titration?
What is the 'titre' in a titration?
Volume of NaOH used
Where should you read the meniscus when recording the titre?
Where should you read the meniscus when recording the titre?
Bottom of the meniscus
What defines concordant titres in this practical?
What defines concordant titres in this practical?
Within 0.20 of each other
What is kept constant when repeating with different HCl concentrations?
What is kept constant when repeating with different HCl concentrations?
Concentration of NaOH
What relationship exists between HCl concentration and NaOH volume?
What relationship exists between HCl concentration and NaOH volume?
Positive correlation
What shape is the graph of HCl concentration vs NaOH volume?
What shape is the graph of HCl concentration vs NaOH volume?
Straight line
Why is the burette rinsed with NaOH solution before filling?
Why is the burette rinsed with NaOH solution before filling?
To ensure accuracy
What colour is phenolphthalein in alkaline conditions?
What colour is phenolphthalein in alkaline conditions?
Pink