A)

B)

The pull down options are: NaHCO3, Na3C6H5O7, H3C6H5O7,H2O, CO2, there is no limiting reactant.

The fizz produced when an Alka-Seltzer tablet is dissolved in water is due to the reaction between sodium bicarbonate, NaHCO3, and citric acid, H3C6H507: 3 NaHCO3(aq) + HC6H5O7 (aq) --> 3 CO (g) + 3 HO(l) + Na3C6H507 (aq) In a certain experiment 0.031 moles of sodium bicarbonate and 0.041 moles of citric acid are allowed to react. Which chemical is the limiting reactant? Which chemical is the excess reactant? Select an answer Select an answer How much of the limiting reactant is left over when the reaction is complete? moles How much of the excess reactant is left over when the reaction is complete? moles 100