Write the chemical reaction for nitrous acid in water, whose equilibrium constant is K a. Include the physical states for each species. K a reaction: Write the chemical reaction for the nitrite ion in water, whose equilibrium constant is K b. Include the physical states for each species.

Question

Genesis Mathews

Chemistry

1 July, 17:45

Write the chemical reaction for nitrous acid in water, whose equilibrium constant is K a. Include the physical states for each species. K a reaction: Write the chemical reaction for the nitrite ion in water, whose equilibrium constant is K b. Include the physical states for each species.

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Answers (1)

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Gavin Chapman · Answer 1

HNO₂ (aq) + H₂O (l) ⇄ NO₂⁻ (aq) + H₃O⁺

NO₂⁻ (aq) + H₂O (l) ⇄ HNO₂ (aq) + OH⁻ (aq)

Explanation:

According to Brönsted-Lowry acid-base theory, nitrous acid is an acid because it transfers an H⁺ to another compound. The corresponding reaction is:

HNO₂ (aq) + H₂O (l) ⇄ NO₂⁻ (aq) + H₃O⁺

According to Brönsted-Lowry acid-base theory, nitrite ion is a base because it accepts an H⁺ from another compound. The corresponding reaction is:

NO₂⁻ (aq) + H₂O (l) ⇄ HNO₂ (aq) + OH⁻ (aq)