titrations

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

Card 2

Front

use the pipette to measure out a known and accurate volume of the alkali

Back

step two

Card 3

Front

place the alkali in a clean, dry conical flask

Back

Preview of the back of card 3

Card 4

Front

add a suitable indicator e.g. methyl orange pink in acid, yellow in nuetral

Back

Preview of the back of card 4

Card 5

Front

place the flask on a white tile so the colour can be seen clearly

Back

Preview of the back of card 5
View more cards

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