Write chemical equations and corresponding equilibrium expressions for each of the two ionization steps of carbonic acid.

H₂CO₃(aq) ⇄ H⁺(aq) + HCO₃⁻(aq)   K₁ = [H⁺][HCO₃⁻]/[H₂CO₃]

HCO₃⁻(aq) ⇄ H⁺(aq) + CO₃²⁻(aq)    K₂ = [H⁺][CO₃²⁻]/[HCO₃⁻]

Explanation:

Let's consider the equation for the first step of the ionization of carbonic acid.

H₂CO₃(aq) ⇄ H⁺(aq) + HCO₃⁻(aq)

The first ionization constant is:

K₁ = [H⁺][HCO₃⁻]/[H₂CO₃]

Let's consider the equation for the second step of the ionization of carbonic acid.

HCO₃⁻(aq) ⇄ H⁺(aq) + CO₃²⁻(aq)

The second ionization constant is:

K₂ = [H⁺][CO₃²⁻]/[HCO₃⁻]

answer: c.

explanation:

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.