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Why do you need to rinse the burette with a base before you completely fill it with NaOH?
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+ Sodium hydroxide
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Michael
Why do you need to rinse the burette with a base before you completely fill it with NaOH?
The burette is designed to make precise volume measurements. The accuracy of a titration depends on precision. If any acidic chemical residue was in the burette, it would neutralize some of the NaOH you are using to measure with. This would make you believe that there was more acid in your sample than was really there. The base rinse makes sure none of your NaOH is accidentally neutralized by unwanted acidic chemical residue in the burette which would alter the NaOH concentration and give you an error in your calculations.
The burette is designed to make precise volume measurements. The accuracy of a titration depends on precision. If any acidic chemical residue was in the burette, it would neutralize some of the NaOH you are using to measure with. This would make you believe that there was more acid in your sample than was really there. The base rinse makes sure none of your NaOH is accidentally neutralized by unwanted acidic chemical residue in the burette which would alter the NaOH concentration and give you an error in your calculations.
The burette is designed to make precise volume measurements. The accuracy of a titration depends on precision. If any acidic chemical residue was in the burette, it would neutralize some of the NaOH you are using to measure with. This would make you believe that there was more acid in your sample than was really there. The base rinse makes sure none of your NaOH is accidentally neutralized by unwanted acidic chemical residue in the burette which would alter the NaOH concentration and give you an error in your calculations.
The burette is designed to make precise volume measurements. The accuracy of a titration depends on precision. If any acidic chemical residue was in the burette, it would neutralize some of the NaOH you are using to measure with. This would make you believe that there was more acid in your sample than was really there. The base rinse makes sure none of your NaOH is accidentally neutralized by unwanted acidic chemical residue in the burette which would alter the NaOH concentration and give you an error in your calculations.
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