titrations 5.0 / 5 based on 2 ratings ? Chemistryquantative chemistryGCSEAQA Created by: jessicateCreated on: 16-05-18 18:08 step one wash and rinse a pipette with the alkali being used 1 of 13 step two use the pipette to measure out a known and accurate volume of the alkali 2 of 13 step three place the alkali in a clean, dry conical flask 3 of 13 step four add a suitable indicator e.g. methyl orange pink in acid, yellow in nuetral 4 of 13 step five place the flask on a white tile so the colour can be seen clearly 5 of 13 step six place the acid in a burette that has been carefully washed and rinsed with the acid 6 of 13 step seven take a reading of the volume of acid in the burette (initial reading) 7 of 13 step eight carefully add the acid to the alkali, swirling the flask to thoroughly mix 8 of 13 step nine continue until the indicator just changes colour. this is called the end point. 9 of 13 step ten take a reading of the volume of acid in the burette (final reading) 10 of 13 step eleven calculate the volume of the acid added (i.e. subtract the initial from the final reading) 11 of 13 hazards and risks acids and alkalis can damage the skin or eyes, so eye protection must be worm and any spillages wiped up. 12 of 13 equation concentration of a solution=amount of substance (mol) / volume (dm cubed) 13 of 13
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