Question

A sealed, carbonated soda has a partial pressure of co2 of 4.0 atm at 25 degrees celsius. the concentration of co2 in the soda is 0.14M. find the concentration of CO2 in the soda after the bottle is opened, and equilibrates at a partial pressure of 3.0 X 10^-4 atm. The henry's law constant is 3.4 X 10^-2 mol/L atm.

Answer 1

1.0 × 10⁻⁵ mol/L

Step-by-step explanation:

The concentration of a gas (C) in a liquid depends on its partial pressure (P), as expressed in Henry's law.

C = k × P

where,

k is the henry's law constant

When the partial pressure of the gas equilibrates at 3.0 × 10⁻⁴ atm, its concentration in the liquid is:

C = k × P

C = 3.4 × 10⁻² mol/L.atm × 3.0 × 10⁻⁴ atm

C = 1.0 × 10⁻⁵ mol/L