pH and Its Measurement
Chemistry ⇒ Acids, Bases, and Salts
pH and Its Measurement starts at 9 and continues till grade 12.
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See sample questions for grade 12
A laboratory technician needs to calibrate a pH meter. Which type of solution should be used for calibration?
A solution has a [H+] of 2 × 10-3 M. Calculate its pH (rounded to two decimal places).
A solution has a pH of 10. Is it acidic, basic, or neutral?
A solution has a pH of 13. What is its [OH-] in mol/L?
A solution has a pH of 3. How many times more acidic is it than a solution with pH 5?
A solution has a pOH of 3. What is its pH at 25°C?
A student measures the pH of rainwater and finds it to be 5.6. Is the rainwater acidic, basic, or neutral?
Calculate the [H+] of a solution with pH = 9.
Calculate the pH of a solution with [H+] = 1 × 10-4 M.
Calculate the pOH of a solution with pH = 5 at 25°C.
Describe how a pH meter works.
Explain why pH is considered a logarithmic scale.
Explain why pure water has a pH of 7 at 25°C.
Explain why the pH of pure water decreases as temperature increases.
If a solution has a pH of 7 at 40°C, is it neutral? Explain.
If a solution has a pH of 7.4, is it slightly acidic, neutral, or slightly basic?
If the [OH-] in a solution is 1 × 10-3 M, what is the pH at 25°C?
The pH of a solution is 6. What is the [H+] in mol/L?
The pH of gastric juice in the human stomach is about 1.5. Is this considered strongly acidic, weakly acidic, or neutral?
What is the pH of a neutral solution at 25°C?
