Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Intro To Buffers
Test Description: Intro to Buffers
Instructions: Answer all questions to get your test result.
1) What is a buffer?
A
A solution which is resistant to changes in pH.
B
A molecule which can change colors, depending on pH.
C
A species whose net concentration does not change throughout a reaction.
D
Any salt which can ionize to produce H+ or OH- ions.
2) Which of the following solutions can be mixed to create a buffer?
A
HCl and NaOH
B
NH3 and H2O
C
NaF and HF
D
HClO and H2O
3) Which of the following mixtures would NOT create a buffer?
A
NH4Cl and NH3
B
HClO and NaClO
C
H2CO3 and NaHCO3
D
NaNO3 and HNO3
4) A buffer is composed of HNO2 and NO2- ions. Which ion would react with added HCl to neutralize it?
A
HNO2 or NO2- could neutralize the added acid.
B
NO2-
C
HNO2
D
H2O
5) A buffer is no longer effective when its pH changes by:
A
A buffer, by definition, is always effective at neutralizing added acid or base.
B
1 pH unit
C
0.1 pH units
D
10 pH units
6) Which buffer solution would have the greatest buffering capacity?
A
All of these would have the same buffering capacity.
B
0.10-M HClO and 0.10-M NaClO
C
1.0-M HClO and 1.0-M NaClO
D
5.0-M HClO and 0.001-M NaClO
7) Which buffer below would be considered an 'ideal buffer'?
A
More than one of these options would be an ideal buffer.
B
0.10-M HCl and 0.10-M NaCl
C
5.0-M HClO and 0.001-M NaClO
D
0.10-M HClO and 0.10-M NaClO
8) Which of the following is a characteristic of an ideal buffer?
A
It contains equal moles of acid and base.
B
It contains a weak conjugate acid-base pair.
C
The pH of the buffer solution = pKa of the acid used.
D
All of these statements are true.
9) Which acid should be used to prepare a buffer with a pH close to 3?
A
HCl (Ka = 1.0 x 10^8)
B
CH3COOH (Ka = 1.75 x10-5)
C
HNO2 (Ka = 4.5 x 10-4)
D
H2CO3 (Ka = 4.4 x10-7)
10) Which of the following is an example of a buffer system?
A
All of the options are examples!
B
The components of your bloodstream
C
Carbonated drinks and fruit juices.
D
Cosmetic products, such as shampoos or contact solution.
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?