What Is the Equilibrium Constant Expression (K_a)for the Acid Dissociation

question 217

Multiple Choice

What is the equilibrium constant expression (K_a) for the acid dissociation of nitrous acid HNO₂? The equation of interest is HNO₂(aq) + H₂O(l) ⇌ H₃O⁺(aq) + NO₂^-(aq) .

• A)K_a = ([H₃O⁺][NO₂^-])/([HNO₂][H₂O])
• B)K_a = ([H₃O⁺][NO₂^-])/([HNO₂])
• C)K_a = ([HNO₂][H₂O])/([H₃O⁺][NO₂^-])
• D)K_a = ([HNO₂])/([H₃O⁺][NO₂^-])

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Definitions:

Formal Fallacy

A type of mistaken reasoning in which the form of an argument itself is invalid.

Argument

Reasoning that is made up of two or more propositions, one of which is supported by the others.

Formal Fallacy

An error in reasoning that involves the incorrect structure of the argument, making the argument invalid regardless of the content.

Invalid Argument

An argument whose conclusions do not logically follow from its premises, making it unsound or flawed in its reasoning.