Identify the conjugate acid-base pairs. H2CO3 and H2O H3O and H2O HCO3 - and H3O H2CO3 and H3O HCO3 - and H2O HCO3 - and H2CO3

Explanation:

H₃O⁺ and H₂O .

H₂O + H⁺  ⇄   H₃O⁺

H₂O accepts proton to form H₃O⁺ so H₂O is base .

H₃O⁺  ⇄   H₂O + H⁺

Here H₃O⁺  is acid because it gives proton ( H⁺ ) .

HCO₃ ⁻ and H₂CO₃

H₂CO₃  ⇄   HCO₃ ⁻ + H⁺

H₂CO₃ is acid because it gives proton ( H⁺ )

HCO₃ ⁻ + H⁺ = H₂CO₃

HCO₃ ⁻  is base because it accepts proton .

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: