If an acid were added to the buffer pair H₂CO₃-NaHCO₃,the concentration of NaHCO₃ would drop.

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Adding an acid to the buffer pair would cause a shift in the equilibrium towards the formation of more NaHCO₃, which would result in a decrease in its concentration. This is because the acid will react with the HCO3- ion in the buffer pair to form more H2CO3, which will then dissociate into more H+ ions and HCO3- ions. The HCO3- ions will then react with any remaining Na+ ions to form more NaHCO₃, which will lower the concentration of the latter.

If an Acid Were Added to the Buffer Pair H2CO3-NaHCO3,the

If an Acid Were Added to the Buffer Pair H₂CO₃-NaHCO₃,the