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Chemistry
MULTIPLE CHOICE ONLY 1-5

MULTIPLE CHOICE ONLY 1-5

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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MULTIPLE CHOICE ONLY 1-5

Things that's not really Things I want to learn Things I learned ... clear ... more REFLECTION GUIDE 1. How does the values of critical thinking and academic proficiency helped you in answering this module? Write your reflection here: INTERVENTION Post- Assessment: Directions: Circle the letter that corresponds to the correct answer. 1.How is buffer used? A. It is used to prevent any change in the pH of a solution, regardless of solute B. It is used as a means of keeping pH at a nearly constant value in a widevariety of chemical applications. C. All of the above D. None of the above 2. In preparing a solution with an acid and its conjugate base, it is done by dissolving theacid form of the buffer in about how many percent volume of water to obtain the final solution volume required? C. 70% the pH of the solution. B. Lower A. 24% B. 50% 3. The greater the value of Ka, the A. Higher C. Same D. None of the above 4. pKa is equal to: A. 10Ka B. -log (Ka) C. log (Ka) D. 10 Ka 5. If a strong base is added to the mixture, the hydrogen ion concentration decreases byless than the amount expected for the quantity of base added. This is because: A. The reaction shifts to the right to accommodate for the loss of H+ in thereaction with- the base B. The reaction shifts to the left to accommodate for the loss of H+ in thereaction with the base C. The reaction shifts upward to accommodate for the loss of H+ in thereaction with the base D. The reaction shifts downward to accommodate for the loss of H+ in thereaction with the base Well done! WORK GREAT You are now a STAR. As A stands for Academically proficient, you are now knowledgeable enough in answering this week's lesson. Page | 6
Transcribed Image Text:Things that's not really Things I want to learn Things I learned ... clear ... more REFLECTION GUIDE 1. How does the values of critical thinking and academic proficiency helped you in answering this module? Write your reflection here: INTERVENTION Post- Assessment: Directions: Circle the letter that corresponds to the correct answer. 1.How is buffer used? A. It is used to prevent any change in the pH of a solution, regardless of solute B. It is used as a means of keeping pH at a nearly constant value in a widevariety of chemical applications. C. All of the above D. None of the above 2. In preparing a solution with an acid and its conjugate base, it is done by dissolving theacid form of the buffer in about how many percent volume of water to obtain the final solution volume required? C. 70% the pH of the solution. B. Lower A. 24% B. 50% 3. The greater the value of Ka, the A. Higher C. Same D. None of the above 4. pKa is equal to: A. 10Ka B. -log (Ka) C. log (Ka) D. 10 Ka 5. If a strong base is added to the mixture, the hydrogen ion concentration decreases byless than the amount expected for the quantity of base added. This is because: A. The reaction shifts to the right to accommodate for the loss of H+ in thereaction with- the base B. The reaction shifts to the left to accommodate for the loss of H+ in thereaction with the base C. The reaction shifts upward to accommodate for the loss of H+ in thereaction with the base D. The reaction shifts downward to accommodate for the loss of H+ in thereaction with the base Well done! WORK GREAT You are now a STAR. As A stands for Academically proficient, you are now knowledgeable enough in answering this week's lesson. Page | 6
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