Question

The Henry's law constant for CO 2 ( g ) in water at 25 ∘ C is 29.4 bar⋅M − 1 . Estimate the concentration of dissolved CO 2 ( g ) in a carbonated soft drink pressurized with 1.95 bar of CO 2 ( g ) .

Answer 1

Answer:

The concentration of CO₂ in the carbonated soft drink (at 25°C) is 57.3 M

Explanation:

The concentration of a gas (C) in a liquid depends on its partial pressure (P). The higher the partial pressure, the higher its concentration in the liquid. The mathematical expression is known as Henry's law.

C = k . P

where,

k is the Henry's constant

C = (29.4 bar⁻¹ . M) . 1.95 bar = 57.3 M