MULTIPLE CHOICE ONLY 1-5 Things that's not reallyThings I want to learnThings I learned ...clear ...moreREFLECTION GUIDE1. How does the values of critical thinking and academic proficiency helped you in answering this module?Write your reflection here:INTERVENTIONPost- 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 soluteB. It is used as a means of keeping pH at a nearly constant value in a widevariety ofchemical applications.C. All of the aboveD. None of the above2. In preparing a solution with an acid and its conjugate base, it is done by dissolving theacid form of the buffer in abouthow many percent volume of water to obtain the final solution volume required?C. 70%the pH of the solution.B. LowerA. 24%B. 50%3. The greater the value of Ka, theA. HigherC. SameD. None of the above4. pKa is equal to:A. 10KaB. -log (Ka)C. log (Ka)D. 10 Ka5. If a strong base is added to the mixture, the hydrogen ion concentration decreases byless than the amount expected forthe 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 baseB. The reaction shifts to the left to accommodate for the loss of H+ in thereactionwith the baseC. The reaction shifts upward to accommodate for the loss of H+ in thereactionwith the baseD. The reaction shifts downward to accommodate for the loss of H+ in thereaction withthe baseWell done!WORKGREATYou are now a STAR.As A stands for Academically proficient, you are nowknowledgeable enough in answering this week's lesson.Page | 6

Acid- Base reaction is a type of chemical reaction that involves the exchange of one or more H+…

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Science

Chemistry

MULTIPLE CHOICE ONLY 1-5

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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Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

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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

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