What is the formula to calculate pH from the hydrogen ion concentration?

Acid-Base Equilibrium Concepts

Interactive Video
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Chemistry, Science
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10th - 12th Grade
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Easy

Ethan Morris
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
pH = log[OH-]
pH = [H+]/log
pH = log[H+]
pH = -log[H+]
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the Ka of a weak acid is very small, which approximation can be used to find the concentration of H+?
H+ = [HA] / Ka
H+ = log(Ka * [HA])
H+ = Ka * [HA]
H+ = sqrt(Ka * [HA])
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the base dissociation constant (Kb) used for?
Calculating the pH of strong acids
Determining the strength of a weak base
Measuring the solubility of salts
Finding the concentration of hydronium ions
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you calculate Ka from Kb?
Ka = Kb / KW
Ka = KW / Kb
Ka = Kb + KW
Ka = Kb * KW
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between pKa and Ka?
pKa = Ka / log
pKa = -log(Ka)
pKa = Ka * log
pKa = log(Ka)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of KW at 25°C?
1 x 10^-14
1 x 10^-4
1 x 10^-10
1 x 10^-7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sum of pKa and pKb for a conjugate acid-base pair?
14
1
0
7
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