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Mastering pH and pOH Calculations in Acid-Base Chemistry

Interactive Video
•
Chemistry, Mathematics, Science
•
9th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Finding pH, pOH, acid and base concentrations
Understanding chemical reactions
Balancing chemical equations
Calculating molar mass
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you are given the concentration of an acid, which formula would you use to find the pH?
pOH = -log[OH-]
pH = -log[H+]
pOH = 14 - pH
pH = pKa + log([A-]/[HA])
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between pH and pOH?
pH + pOH = 7
pH + pOH = 14
pH - pOH = 0
pH * pOH = 14
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the pOH is 10.61, what is the base concentration in molarity?
5.0 x 10^-11 M
1.0 x 10^-10 M
1.5 x 10^-10 M
2.5 x 10^-11 M
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many decimal places should pH be rounded to if the acid concentration has two significant figures?
One decimal place
Two decimal places
Three decimal places
Four decimal places
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When given a pH of 8.5, how many significant figures should the acid concentration have?
One significant figure
Two significant figures
Three significant figures
Four significant figures
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in finding the acid concentration from a given pH?
Use the formula pH = -log[H+]
Use the formula pOH = -log[OH-]
Subtract pH from 14
Add pH and pOH
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