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28 March, 06:39

What is the conjugate acid in the following equation:

NO2 - + H2O / longrightarrow ⟶ HNO2 + OH-

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  1. 28 March, 06:50
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    HNO₂

    Explanation:

    An acid is a proton donor; a base is a proton acceptor.

    Thus, NO₂⁻ is the base, because it accepts a proton from the water.

    H₂O is the acid, because it donates a proton to the nitrite ion.

    The conjugate base is what's left after the acid has given up its proton.

    The conjugate acid is what's formed when the base has accepted a proton.

    NO₂⁻/HNO₂ make one conjugate acid/base pair, and H₂O/OH⁻ are the other conjugate acid/base pair.

    NO₂⁻ + H₂O ⇌ HNO₂ + OH⁻

    base acid conj. conj.

    acid base
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