Chemistry Unit 3

Chemistry unit 3 AQA Higher teir.

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Titration

Put 25cm³ of the alkali of the known concentration (usually sodium hydroxide) into a conical flask using a glass pipette. 

Fill a burette up to 0cm³ with your acid of unknown concentration. 

Add some phenolphthalein indicator solution to your alkali. It will turn pink.

Put the burette on a steady drip, whilst swirling the conical flask around until the solution goes completely colourless. 

Take the reading from the burette.

Now you can work out your concentration.

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