A student decides to set up an experiment that night beforeperforming the experiment. A 0.40 g sample of sodium hydroxide in a250 mL beaker that has a mass of 112.58 g. The beaker is allowed tostand open (exposed to air) for 24 hr. At that time, the studentobserves that the beaker contains a dry, white residue and thetotal mass of the beaker and the residue is 113.09 g. He proposesthat a reaction must have occurred between the sodium hydroxide andthe carbon dioxide in the air. The possible reactions are:
sodium hydroxide(s) + carbon dioxide( g) -> sodium carbonate(s)
sodium hyroxide (s) + carbon dioxide (g) -> sodium carbonate(S) + water (g)
sodium hydroxide (s) -> sodium oxide (s) + water (g)
Write the balanced chemical equations for the abovereactions.
Determine the amount of solid product expected in eachreaction.
Based on these calculations, which of the above reactions wouldyou predict is correct? Show all the work including chemicalequations and explain your choice. Thank you.
