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9. In extreme cases of high pH, a dilute acid may be injected directly into the blood. We can simulate this by adding solid NH4CI to the beaker.

9. In extreme cases of high pH, a dilute acid may be injected directly into the blood. We can simulate this by adding solid NH4CI to the beaker.

Chemistry
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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**Experiment on pH Adjustment Using Ammonium Chloride** **Objective:** To simulate the adjustment of high pH in a system by adding a dilute acid analog, such as solid NH₄Cl, to a solution. **Materials:** - Solid NH₄Cl - Beaker - pH meter (Checker by Hanna) **Procedure:** 1. Add solid NH₄Cl to a beaker containing a solution with high pH. 2. Observe the changes in pH using the pH meter. **Observations:** - The initial pH of the solution was observed to be 7.40, as indicated by the pH meter. **Question 20 (Q20):** Use equilibrium arguments to describe what happened to the pH? **Explanation:** When NH₄Cl is added to the solution, it dissociates into NH₄⁺ and Cl⁻ ions. The NH₄⁺ ion acts as an acid, donating a proton (H⁺) to the solution, which can lower the overall pH. The equilibrium shift and resulting pH change need to be analyzed further. **Graph/Diagram Description:** - Image shows a beaker with a solid at the bottom, indicating the addition of NH₄Cl to the solution. - The pH meter displays a reading of 7.40. **Instructions:** Record any further observations regarding changes in pH over time, and analyze how the addition of NH₄Cl affected the equilibrium of the solution.
Transcribed Image Text:**Experiment on pH Adjustment Using Ammonium Chloride** **Objective:** To simulate the adjustment of high pH in a system by adding a dilute acid analog, such as solid NH₄Cl, to a solution. **Materials:** - Solid NH₄Cl - Beaker - pH meter (Checker by Hanna) **Procedure:** 1. Add solid NH₄Cl to a beaker containing a solution with high pH. 2. Observe the changes in pH using the pH meter. **Observations:** - The initial pH of the solution was observed to be 7.40, as indicated by the pH meter. **Question 20 (Q20):** Use equilibrium arguments to describe what happened to the pH? **Explanation:** When NH₄Cl is added to the solution, it dissociates into NH₄⁺ and Cl⁻ ions. The NH₄⁺ ion acts as an acid, donating a proton (H⁺) to the solution, which can lower the overall pH. The equilibrium shift and resulting pH change need to be analyzed further. **Graph/Diagram Description:** - Image shows a beaker with a solid at the bottom, indicating the addition of NH₄Cl to the solution. - The pH meter displays a reading of 7.40. **Instructions:** Record any further observations regarding changes in pH over time, and analyze how the addition of NH₄Cl affected the equilibrium of the solution.
**Transcription for Educational Website:** --- **Experiment on pH and the Effect of Adding Dry Ice** **Section 8: Physiological Response to High Blood pH** When the body senses a high blood pH, it reduces breathing to limit the exhalation of CO₂. We can simulate this effect by adding dry ice (solid CO₂) to the beaker. **Image Explanation** - A glass beaker containing water with a piece of dry ice submerged in it is shown. The dry ice is sublimating, releasing carbon dioxide gas, visible as a fog over the beaker. **pH Measurement** - A digital pH meter (Checker by HANNA) is displayed, showing a pH level of 7.59, indicative of a slightly basic solution. **Instructions** Record your observations. **Questions** - **Q18:** What is happening to the dry ice? - **Q19:** Use equilibrium arguments to describe what happened to the pH? --- This section provides insights into how changes in carbon dioxide levels affect pH, simulating physiological responses.
Transcribed Image Text:**Transcription for Educational Website:** --- **Experiment on pH and the Effect of Adding Dry Ice** **Section 8: Physiological Response to High Blood pH** When the body senses a high blood pH, it reduces breathing to limit the exhalation of CO₂. We can simulate this effect by adding dry ice (solid CO₂) to the beaker. **Image Explanation** - A glass beaker containing water with a piece of dry ice submerged in it is shown. The dry ice is sublimating, releasing carbon dioxide gas, visible as a fog over the beaker. **pH Measurement** - A digital pH meter (Checker by HANNA) is displayed, showing a pH level of 7.59, indicative of a slightly basic solution. **Instructions** Record your observations. **Questions** - **Q18:** What is happening to the dry ice? - **Q19:** Use equilibrium arguments to describe what happened to the pH? --- This section provides insights into how changes in carbon dioxide levels affect pH, simulating physiological responses.
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