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Identify the proton nature of unlabelled acid samples (Materials (A…
Identify the proton nature of unlabelled acid samples
Proton nature
Number of protons (H+)
Monoprotic
Diprotic
Triprotic
Polyprotic
...
Method to identify (How?)
Titration
Calculate the mole ratio of two reacting species, which are the acids and base
Get the number of protons of the acids
Unlabelled acid samples
Need to know the concentration
Need to use indicators
Phenolphthalein
Colour changes
In a base it is magenta
In an acid it is colourless
Need a base to react with
Sodium hydroxide (NaOH)
Need its concentration (the concentration of the sodium hydroxide)
Materials
A burette
A volumetric pipette
A bulb
2 conical flasks
Indicator (phenolphthalein)
Sodium hydroxide solution
Acid solution B
Acid solution A