Titration is used to work out the amount of alkali needed to neutralise an acid ( or the other way around)
The method is:
1. Put 50cm^2 of acud in a conical flask
2. Put indicator (phenolphthalein) in the alkali and mix it, should go purple
3. Full the burette with acid (making sure the tap is full)
5. Put the conical flask ob top of a white tile to see the colour change(optional)
4. Open the tap with one hand and swirl the conical flask with other hand to mix the alkali and acid together
5. Close the tap when the solution in the conical flask goes colourless
6. Work out how much acid was used by substracting the end reading of the burette from the initial reading(eg: initial reading 25cm^2, and end reading 11cm^2. Working out: 25-11=14cm^2 used to neutralise the alkali)
From this you can then work out the concentration of one of the 2 (alkali or acid) if you know the 2 of the folowing things about the other one:
Concentration
Moles
Volume
(usually you will be given concentration and volume and you have to work out concentration. Conc=mol/vol)
Once u get the moles of one substance, you need to work ou the ratio so you need to look at the balanced equation..... Look at the picture (sorry cant explain the last part so well but its on the pic)
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