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What is the concentration of hydroxide ions in a solution with a pH of 11?
What is the concentration of hydroxide ions in a solution with a pH of 11?
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Practice Questions
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Q1
What is the concentration of hydroxide ions in a solution with a pH of 11?
1 x 10^-3 M
1 x 10^-4 M
1 x 10^-5 M
1 x 10^-6 M
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pOH = 14 - pH = 14 - 11 = 3. [OH-] = 10^-pOH = 10^-3 M.
Questions & Step-by-step Solutions
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Q
Q: What is the concentration of hydroxide ions in a solution with a pH of 11?
Solution:
pOH = 14 - pH = 14 - 11 = 3. [OH-] = 10^-pOH = 10^-3 M.
Steps: 7
Show Steps
Step 1: Understand that pH is a measure of how acidic or basic a solution is.
Step 2: Know that pH + pOH = 14. This means if you have the pH, you can find pOH.
Step 3: Since the pH is given as 11, calculate pOH by subtracting pH from 14: pOH = 14 - 11.
Step 4: Perform the subtraction: 14 - 11 = 3. So, pOH = 3.
Step 5: Now, to find the concentration of hydroxide ions [OH-], use the formula: [OH-] = 10^-pOH.
Step 6: Substitute pOH into the formula: [OH-] = 10^-3.
Step 7: Calculate 10^-3, which equals 0.001 M. This means the concentration of hydroxide ions is 0.001 M.
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