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In: Chemistry

Which of the following is/are a conjugate acid-base pair? HCN and CN- HNO3 and NO3- HClO4...

Which of the following is/are a conjugate acid-base pair?

HCN and CN-

HNO3 and NO3-

HClO4 and Cl-

KOH and OH-

HNO3 and HNO2

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