Use equations to explain how a buffer system, such as hno2:no2, reacts with h3o and oh?

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  1. HNO2/NO2^- system.
    With H3O^+ the NO2^- uses that as
    H3O^+ + NO2^- ==> HNO2 + H2O

    With OH^- the HNO2 uses that as
    HNO2 + OH^- ==> NO2^- + H2O

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