Fill in the missing chemical formulae in the tables below.acid conjugate base base conjugate acidNH+4 NH3 HCO−3 H2CO3H2PO−4 HPO42− CO2−3 HCOH3O+ H2O H2O

To fill in the missing chemical formulae in the table, we can follow these steps:

1. ### Break Down the Problem

• Identify the missing conjugate base for NH4+.
• Identify the missing conjugate acid for HCO3−.
• Identify the missing base for H2PO4−.
• Identify the missing conjugate acid for CO3^2−.
• Identify the missing base for H3O+.

2. ### Relevant Concepts

• Acid-base theory:
  • An acid donates a proton (H+), resulting in its conjugate base.
  • A base accepts a proton (H+), resulting in its conjugate acid.

3. ### Analysis and Detail

1. NH4+ (Acid) → Conjugate Base:

   • NH4+ loses a proton (H+) to become NH3.

2. HCO3− (Base) → Conjugate Acid:

   • HCO3− gains a proton (H+) to become H2CO3.

3. H2PO4− (Acid) → Conjugate Base:

   • H2PO4− loses a proton (H+) to become HPO4^2− (already given).

4. CO3^2− (Base) → Conjugate Acid:

   • CO3^2− gains a proton (H+) to become HCO3−.

5. H3O+ (Acid) → Conjugate Base:

   • H3O+ loses a proton (H+) to become H2O (already given).

4. ### Verify and Summarize

• The values logically follow from the definitions of conjugate acids and bases.
• Now we can summarize the results.

Final Answer

Note: The entries for the base and conjugate acid corresponding to H2O and H3O+ have been retained, as H2O can also act as an acid/base in other contexts.