Practice Quantitative Measures: Ph, Poh, And K_w (7.3)

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6 sample questions

Question 1.
What is the pH of a neutral solution at 25°C?
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Consider the equilibrium of water.
Question 2.
If the [H⁺] is 1 × 10⁻¹⁴ M, what is the pOH?
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Use the relationship pH + pOH = 14.
3Question 3.
What is the pH of a neutral solution at 25°C?
- 7
- 14
- 0
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Consider the properties of pure water.
4Question 4.
If [OH⁻] = 1 x 10⁻⁴ M, what is the pH?
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Calculate pOH first.
Question 5.
Calculate the pH of a 0.25 M ammonium hydroxide solution (a weak base) using Kb = 1.76 × 10⁻⁵.
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Start with [B] as the base.
Question 6.
How would the pH change if K_w were to increase to 2.0 × 10⁻¹⁴ at elevated temperature? Discuss the implications for acid-base behavior in solutions.
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Consider the shifts in concentrations of both ions.

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