Carbonic acid (H2CO3) is a polyprotic acid. Write balanced chemical equations for the sequence of reactions that carbonic acid can undergo when it's dissolved in water.

H₂CO₃(aq) ⇄ H⁺(aq) + HCO₃⁻(aq)

HCO₃⁻(aq) ⇄ H⁺(aq) + CO₃²⁻(aq)

Explanation:

Carbonic acid (H₂CO₃) has 2 acidic protons. When is dissolved in water, it loses the protons (H⁺) in two sequential steps:

- First, it loses 1 proton to form the hydrogen carbonate ion (HCO₃⁻)

H₂CO₃(aq) ⇄ H⁺(aq) + HCO₃⁻(aq)

- Then, the acid carbonate anion loses its proton to form carbonate ion (CO₃²⁻):

HCO₃⁻(aq) ⇄ H⁺(aq) + CO₃²⁻(aq)

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.