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AP Scoring Guide Chemistry Unit 8 Progress Check MCQ Questions And Answer Keys $12.85
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AP Scoring Guide Chemistry Unit 8 Progress Check MCQ Questions And Answer Keys

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AP Scoring Guide Chemistry Unit 8 Progress Check MCQ Questions And Answer KeysAP Scoring Guide Chemistry Unit 8 Progress Check MCQ Questions And Answer KeysAP Scoring Guide Chemistry Unit 8 Progress Check MCQ Questions And Answer KeysAP Scoring Guide Chemistry Unit 8 Progress Check MCQ Questions An...

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  • December 17, 2023
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AP Scoring Guide Chemistry Unit 8 Progress Check MCQ
Questions And Answer Keys

Buffer solutions containing and range in from 10.0 to 11.0. The chemical equation below
represents the equilibrium between and , and the table lists the composition of four different buffer
solutions at .




Buffer
1 0.150 0.100 ?

2 0.200 0.200 10.32

3 0.100 0.100 10.32

4 0.100 0.200 ?




1. Which of the following chemical equilibrium equations best shows what happens in the buffer solutions to
minimize the change in when a small amount of a strong base is added?

A



B



C



D




2. Which of the following mathematical expressions can be used to determine the approximate of buffer 1
?




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, A



B


C



D




3. Which mathematical expression can be used to explain why buffer 2 and buffer 3 have the same ?


A



B



C




D




4.
Pure water autoionizes as shown in the equation above. Based on this information, which of the following is
correct?

A The autoionization equilibrium for pure water favors the formation of reactants at compared to .


B The autoionization equilibrium for pure water produces the same amount of ions at and .


C At , for pure water.


D At , for pure water.




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, 5. at
Based on the information above, which of the following is true for a sample of pure water at ?

A



B



C




D




6.
The endothermic autoionization of pure water is represented by the chemical equation shown above. The
of pure water is measured to be 7.00 at and 6.02 at . Which of the following statements
best explains these observations?

A At the higher temperature water dissociates less, , and the water becomes basic.


B At the higher temperature water dissociates less, , and the water remains neutral.


C At the higher temperature water dissociates more, , and the water becomes acidic.



D At the higher temperature water dissociates more, , and the water remains neutral.




7. Which of the following gives the best estimate for the of a solution at
?




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