Question: If the pH of a solution is 3, what is the concentration of hydrogen ions [H+] in moles per liter?
Options:
0.001 M
0.01 M
0.1 M
1 M
Correct Answer: 0.1 M
Solution:
The concentration of hydrogen ions [H+] is 10^(-pH) = 10^(-3) = 0.001 M.
If the pH of a solution is 3, what is the concentration of hydrogen ions [H+] in
Practice Questions
Q1
If the pH of a solution is 3, what is the concentration of hydrogen ions [H+] in moles per liter?
0.001 M
0.01 M
0.1 M
1 M
Questions & Step-by-Step Solutions
If the pH of a solution is 3, what is the concentration of hydrogen ions [H+] in moles per liter?
Step 1: Understand that pH is a measure of how acidic or basic a solution is.
Step 2: Know that the formula to find the concentration of hydrogen ions [H+] from pH is [H+] = 10^(-pH).
Step 3: Substitute the given pH value (which is 3) into the formula: [H+] = 10^(-3).
Step 4: Calculate 10 raised to the power of -3, which equals 0.001.
Step 5: Conclude that the concentration of hydrogen ions [H+] is 0.001 moles per liter (M).
pH and Hydrogen Ion Concentration – The pH scale measures the acidity or basicity of a solution, where pH is the negative logarithm of the hydrogen ion concentration [H+].
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