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alexira [117]
2 years ago
5

At 25 °C, what is the hydroxide ion concentration, [ OH â ] , in an aqueous solution with a hydrogen ion concentration of [ H +

] = 5.0 Ã 10 ^â 4 M?
Chemistry
1 answer:
umka2103 [35]2 years ago
7 0

Answer:

[OH⁻] = 2.0 × 10⁻¹¹ M

Explanation:

Given data

  • Temperature: 25°C
  • Concentration of hydrogen ion ([H⁺]): 5.0 × 10⁻⁴ M
  • Concentration of hydroxide ion ([OH⁻]): ?

We can calculate the concentration of hydroxide ion using the following expression.

[H⁺].[OH⁻] = Kw

where,

Kw is the ionic product of water (Kw = 1.0 × 10⁻¹⁴ at 25°C)

[H⁺].[OH⁻] = Kw

[OH⁻] = Kw/[H⁺]

[OH⁻] = 1.0 × 10⁻¹⁴/5.0 × 10⁻⁴

[OH⁻] = 2.0 × 10⁻¹¹ M

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