An experiment determining the acid concentration on a white and red wine

In our previous paper on red wines [ 2 ] we needed to quantify all acid-base active substances in order to investigate the acid-base chemistry of red wine at a speciation level by way of a careful equilibrium analysis.

In activity 3, the acid content is determined by pH titration.

titratable acidity in wine pdf

Sulfur dioxide is an antioxidant and a bactericide that is added to the wine. Thus, the uncertainty of our result is not a good indicator that our result is incorrect. According to our results, the pH of the red wines varied from 2.

We think so, because the experiment for red wines was conducted the same way as white wines and the results for white wines are correct. In activity 6, students examine fermenting yeast under the microscope. When considering the uncertainty on both results, we can affirm that the concentration of ethanol of the red wine is the same as the white wine.

This is probably the main cause of error of the experiment.

Wine titration experiment

This is probably the main cause of error of the experiment. Standard addition of some substance to the wine was performed in order to verify the attribution of the peaks. On the other hand, if we look at each wine, i. For the acidity experiment, we did not standardized the NaOH used in the titration against potassium hydrogen phthalate, a monoprotic acid that is a primary standard. Kibin does not guarantee the accuracy, timeliness, or completeness of the essays in the library; essay content should not be construed as advice. The second parameter we studied was the mass of tartaric acid present in wine. For the red wine, we got Refraction is the change in direction of light when it passes from one medium to another e. Twitter introduced an A story of okonkwo of the ibo village in things fall apart by chinua achebe updated privacy policy on Wednesday that a journey to achieve my career goals has users worried about how their private information is being an examination of the second task of marriage tracked, stored and used. Quantification of Organic Acids First, to quantify carboxylic acids in wine, we chose to adopt a method without derivatization based on a classical RP separation as in our previous paper [ 2 ].

A refractometer uses this principle to determine the concentration of dissolved particles in a solution. Uncover new sources by reviewing other students' references and bibliographies Inspire new perspectives and arguments or counterarguments to address in your own essay Read our Academic Honor Code for more information on how to use and how not to use our library.

As for ion-exclusion chromatography, each sample was also purified from metal ions in order to prevent the saturation of the cation exchange resin surface of the column used for the separation.

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The Difference Between Red and White Wine : Conclusion