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You are provided with a sample of vinegar which contains approximately 5g of ethanoic acid (CH3COOH) per 100cm³. The aim of this experiment is to determine the exact concentration of this chemical in vinegar.
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- Words:
- 1333
- Submitted:
- Tue Feb 14 2006
... Georgina Garfield EXPERIMENT 4: TO DETERMINE THE CONCENTRATION OF ETHANOIC ACID IN A SAMPLE OF VINEGAR You are provided with a sample of vinegar which contains approximately 5g of ethanoic acid (CH3COOH) per 100cm³. The aim of this experiment is to determine the exact concentration of this chemical in vinegar. To do this you must carry out an acid-base titration because it is a very accurate procedure if done correctly. The solution of vinegar is the acid, and the base you will titrate it against is sodium hydroxide (NaOH). This solution has a concentration of exactly 0.100 mol dm¯³. The first thing you must do is convert the approximate concentration of Ethanoic Acid in vinegar from grams per 100cm³, to moles per dm³. To do this you must carry out the following calculations: *Number of moles of CH3COOH in 5g. You know that the number of moles can be calculated by dividing the mass
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