When heated at high temperature, sodium carbonate, Na2CO3, decomposes to sodium oxide and carbon dioxide gas. A sample of 587.3 mL gas was collected using water displacement method at 27 °C at a total pressure of 760 mm Hg and vapour pressure of water is 28 mm Hg.
Determine the partial pressure of carbon dioxide, CO2 released from the reaction.
(2 marks)
To determine the partial pressure of carbon dioxide, we need to consider the total pressure and subtract the vapor pressure of water.
Total pressure = 760 mm Hg
Vapor pressure of water = 28 mm Hg
Partial pressure of carbon dioxide = Total pressure - Vapor pressure of water
Partial pressure of carbon dioxide = 760 mm Hg - 28 mm Hg
Partial pressure of carbon dioxide = 732 mm Hg