Question

Cans of coca-cola are carbonated at 25 degrees Celsius using a CO₂​ pressure of 2.5 atm. After carbonation, 355 ml of liquid contains 1.25 g of dissolved carbon dioxide. What is the molarity of dissolved carbon dioxide if carbonation is performed at 25 degrees Celsius using a carbon dioxide pressure of 1 atm?

Answer 1

volume = 355 mL = 0.355 L

mass of CO2 = 1.25 g

molar mass of CO2 = 44 g / mol

moles of CO2 = mass / molar mass

                      = 1.25 g / 44 g / mol

                     = 0.0284

molarity = moles / volume

             = 0.0284 / 0.355

             = 0.0800 M

molarity of CO2 = 0.0800 M