
Molar Mass and Buffer Solutions
Interactive Video
•
Chemistry
•
11th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of a buffer solution?
To neutralize a solution
To decrease the pH of a solution
To maintain a stable pH in a solution
To increase the pH of a solution
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the given problem, what is the target pH for the buffer solution?
4.50
3.95
4.00
3.50
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many moles of H2CO2 are present in 1.25 liters of 0.50 M solution?
0.750 moles
0.250 moles
0.500 moles
0.625 moles
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of sodium formate used in the calculations?
68.008 g/mol
88.008 g/mol
58.008 g/mol
78.008 g/mol
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What common error do students make when calculating the molar mass of sodium formate?
Forgetting to include the mass of sodium
Forgetting to include the mass of hydrogen
Forgetting to include the mass of oxygen
Forgetting to include the mass of carbon
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should you do if you forget to convert Kb to Ka in a problem?
Use an estimated value for Ka
Use the Kb value directly
Rework the problem with the correct conversion
Ignore the conversion
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sum of pKa and pKb at 25°C?
14
16
12
10
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