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Questions and Answers
What is the pH of a solution when [H₃O⁺] = [OH⁻]?
What is the pH of a solution when [H₃O⁺] = [OH⁻]?
- Exactly 14
- Exactly 7 (correct)
- Exactly 0
- Exactly 1
What is the dissociation constant of water (Kw) at 298K?
What is the dissociation constant of water (Kw) at 298K?
- 1 x 10⁻¹⁸
- 1 x 10⁻¹²
- 1 x 10⁻¹⁶
- 1 x 10⁻¹⁴ (correct)
What is the pH range of the indicator Methyl Orange?
What is the pH range of the indicator Methyl Orange?
- 8-10
- 3-5 (correct)
- 12-14
- 5-7
What is the formula to calculate pOH?
What is the formula to calculate pOH?
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What is the colour of the base in the indicator Phenolphthalein?
What is the colour of the base in the indicator Phenolphthalein?
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What is the definition of pH?
What is the definition of pH?
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What is the limitation of the pH scale?
What is the limitation of the pH scale?
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According to the self-ionisation of water, what is the equilibrium reaction?
According to the self-ionisation of water, what is the equilibrium reaction?
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What is the concentration of H₃O⁺ and OH⁻ ions in pure water at 298K?
What is the concentration of H₃O⁺ and OH⁻ ions in pure water at 298K?
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What is the pH of a solution when [H₃O⁺] = 1 x 10⁻⁵?
What is the pH of a solution when [H₃O⁺] = 1 x 10⁻⁵?
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What is the pH range of the indicator Phenolphthalein?
What is the pH range of the indicator Phenolphthalein?
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