We have this reaction :
HCO3- + OH- => CO3^-2 + H2O

Specify the conjugate pairs
and , which direction the reaction equilibrium shift ? and How ( as a rule ) ?

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  1. Why do you have the problem identifying the conjugate pairs?
    The pair consists of the one with more H and the one with less H. And for CO3^2- it should be obvious not to pick H2O as its conjugate pair.

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