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titration

QuestionAnswer
titration Use a titration to neutralise an acid with a base and show that a salt is formed.
Apparatus Burette, pipette, conical flask, beaker, retort stand, hydrochloric acid, sodium hydroxide solution, methyl orange indicator, white tile
Method Fill the burette with dilute hydrochloric acid to just above the 0 cm3 mark. Use the tap to release acid and bring down the level to the 0 cm3 mark. 2. Use a pipette to measure 25 cm3 of sodium hydroxide solution and add to the conical flask.
method next steps 3. Add two to three drops of methyl orange indicator to the sodium hydroxide solution. 4. Carefully release the acid into the base by opening the tap on the burette. 5. Swirl the conical flask carefully as you add the acid.
method next step [3] When the indicator turns from orange to pink stop adding the acid. 7. Read the volume on the burette to find the volume of acid that was added. 8. Repeat the experiment three times and find the average volume of acid that was added.
mthod fourth step Repeat again without indicator. Add the average volume of acid required to neutralise the base. Use the value you obtained from the previous titrations.
Separation of salt 1. Put some of the solution from the conical flask into an evaporating dish. 2. Place the evaporating dish on a beaker of water. 3. Heat the beaker to evaporate the water from the evaporating dish. 4. Observe and record your results.
Created by: user143
 

 



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