Required Practical: Strong Acid & Strong Alkali Titration (AQA GCSE Chemistry): Flashcards
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Purpose of acid-base titrations
Purpose of acid-base titrations
Determine concentration of acid or alkali
Strong acid used in required practical titration
Strong acid used in required practical titration
Hydrochloric acid (HCl)
Strong alkali used in required practical titration
Strong alkali used in required practical titration
Sodium hydroxide (NaOH)
Volume of HCl measured for titration
Volume of HCl measured for titration
25 cm³
Indicator used in HCl-NaOH titration
Indicator used in HCl-NaOH titration
Phenolphthalein
Phenolphthalein colour in acidic conditions
Phenolphthalein colour in acidic conditions
Colourless
Phenolphthalein colour in alkaline conditions
Phenolphthalein colour in alkaline conditions
Pink
What to rinse burette with before titration
What to rinse burette with before titration
The NaOH solution being used
What indicates endpoint of titration
What indicates endpoint of titration
First permanent pink colour
Name for volume of NaOH used in titration
Name for volume of NaOH used in titration
Titre
Number of concordant titres needed
Number of concordant titres needed
At least three
Definition of concordant titres
Definition of concordant titres
Titres within 0.20 cm³ of each other
Correlation between HCl conc. & NaOH volume needed
Correlation between HCl conc. & NaOH volume needed
Positive correlation
Definition of neutralisation
Definition of neutralisation
Reaction of acid & alkali forming water and salt