Question

1. Write a chemical equation showing how each behaves as an acid when dissolved in water.

a. H2S

b. NH4+

2. Write a chemical equation showing how each species behaves as a base when dissolved in water.

a. NH3

b. F-

Please answer ASAP!! WILL GIVE THUMBS UP!!!

Answer 1

1.

a.H₂S + H₂O ----------> HS^- + H₃O⁺

as you can see H₂S looses its H⁺(proton) and donates to H2O and become HS^-.

so H₂S is acts as acid in this reaction.

b.NH₄⁺ + H₂O -------->NH₃ + H3O⁺

as you can see NH₄⁺ looses its H⁺(proton) and donates to H2O. and become NH₃ .

so.NH₄⁺  acts as  acid in this reaction.

2.

a.

NH₃ + H₂O-------------->NH₄⁺ + OH^-

Here we see that NH3 accepts a proton(H⁺) to become NH₄⁺.

This proves that NH₃ acts as a base when dissolved in water.

b.

F^- + H₂O ------------>HF + OH^-

Here we see that F^- accepts a proton(H⁺) to become HF.

This proves that F^- acts as a base when dissolved in water.