acidity arises (at least in part) from an equilibrium between dissolved carbon dioxide and hydrogen ions. When CO2 is dissolved in water, we see the formation of hydrogen ions and bicarbonate anions. According to Le Chatelier's principle, adding more carbon dioxide will increase the H+ concentration and thus lower the pH. However, when the soft drink container is opened, there is a release of pressure in the container. You can often hear the carbon dioxide escaping as soon as the lid is removed. As the carbon dioxide vents, its concentration in the liquid will decrease. This change causes a shift in the equilibrium, moving it to the left toward more CO2 formation. In order for this to happen, hydrogen cations and bicarbonate anions need to combine to form the carbon dioxide and water. As a result, the hydrogen ion concentration will decrease, causing a rise in the pH. If the drink is heated, more CO2 will be liberated from solution. Leaving a closed can out in the sun and then opening it will usually lead to a arge release of gas. If the opened drink is allowed to warm to room temperature, after a while the drink will warm and CO2 will escape. In either case, the increase in temperature will remove carbon dioxide from solution, again shifting the equilibrium to the left. When the drinks are manufactured, the materials are kept at a low temperature to facilitate dissolving of more CO2. Scenario: You work at a soda company and the head of finance said, you need to cut down expenses on packaging and come up with an environment-friendly packaging that will lessen production cost, without sacrificing the quality of your product. You are the head of a manufacturing division and was asked to decide the best packaging for your soda product. With the following considerations above, what do you think is the best type of packaging for soft drinks: glass, can, or plastic? Justify your answer.
acidity arises (at least in part) from an equilibrium between dissolved carbon dioxide and hydrogen ions. When CO2 is dissolved in water, we see the formation of hydrogen ions and bicarbonate anions. According to Le Chatelier's principle, adding more carbon dioxide will increase the H+ concentration and thus lower the pH. However, when the soft drink container is opened, there is a release of pressure in the container. You can often hear the carbon dioxide escaping as soon as the lid is removed. As the carbon dioxide vents, its concentration in the liquid will decrease. This change causes a shift in the equilibrium, moving it to the left toward more CO2 formation. In order for this to happen, hydrogen cations and bicarbonate anions need to combine to form the carbon dioxide and water. As a result, the hydrogen ion concentration will decrease, causing a rise in the pH. If the drink is heated, more CO2 will be liberated from solution. Leaving a closed can out in the sun and then opening it will usually lead to a arge release of gas. If the opened drink is allowed to warm to room temperature, after a while the drink will warm and CO2 will escape. In either case, the increase in temperature will remove carbon dioxide from solution, again shifting the equilibrium to the left. When the drinks are manufactured, the materials are kept at a low temperature to facilitate dissolving of more CO2. Scenario: You work at a soda company and the head of finance said, you need to cut down expenses on packaging and come up with an environment-friendly packaging that will lessen production cost, without sacrificing the quality of your product. You are the head of a manufacturing division and was asked to decide the best packaging for your soda product. With the following considerations above, what do you think is the best type of packaging for soft drinks: glass, can, or plastic? Justify your answer.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The pH of the average soft drink is strongly acidic, enough so that it could clean the rust off metal. The
acidity arises (at least in part) from an equilibrium between dissolved carbon dioxide and hydrogen ions.
When CO2 is dissolved in water, we see the formation of hydrogen ions and bicarbonate anions.
According to Le Chatelier's principle, adding more carbon dioxide will increase the H+ concentration and
thus lower the pH. However, when the soft drink container is opened, there is a release of pressure in
the container. You can often hear the carbon dioxide escaping as soon as the lid is removed. As the
carbon dioxide vents, its concentration in the liquid will decrease. This change causes a shift in the
equilibrium, moving it to the left toward more CO2 formation. In order for this to happen, hydrogen
cations and bicarbonate anions need to combine to form the carbon dioxide and water. As a result, the
hydrogen ion concentration will decrease, causing a rise in the pH. If the drink is heated, more CO2 will
be liberated from solution. Leaving a closed can out in the sun and then opening it will usually lead to a
large release of gas. If the opened drink is allowed to warm to room temperature, after a while the drink
will warm and CO2 will escape. In either case, the increase in temperature will remove carbon dioxide
from solution, again shifting the equilibrium to the left. When the drinks are manufactured, the
materials are kept at a low temperature to facilitate dissolving of more CO2.
Scenario: You work at a soda company and the head of finance said, you need to cut down expenses on
packaging and come up with an environment-friendly packaging that will lessen production cost,
without sacrificing the quality of your product. You are the head of a manufacturing division and was
asked to decide the best packaging for your soda product. With the following considerations above,
what do you think is the best type of packaging for soft drinks: glass, can, or plastic?
Justify your answer.
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