Titration, estimation of carbon dioxide in carbonated beverage
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5. To examine the soda fountain methods of making carbonated beverages by measuring the amount of acid in a fixed volume of Coca-Cola. Use a 250 ml sample for all analysis and make each batch with a separate CO2 cylinder so that the carbon dioxide content in each batch would be as uniform as possible. In a typical experiment, saturate the Coke solution with all the CO2 in the cylinder. Titrate the 250 ml sample of a phenolphthalein endpoint with 7.65 ml of a sodium hydroxide solution that contains 5.670 grams of sodium hydroxide per liter. How much carbon dioxide was in the saturated solution?
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Solution Summary
Titration, estimation of carbon dioxide in carbonated beverage are provided.
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See the attachment.
Volume of CO2 = 250ml
Volume of NaOH = 7.65ml
Mass concentration of NaOH = 5.670g/l
Equations for the reaction:
CO2(g) + H2O(l) ↔ H2CO3(aq)
H2CO3 + 2NaOH → Na2CO3 + ...
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