Combustion Reactions and Percent Yield

These flashcards cover the concepts of limiting reactants, theoretical and experimental yields in chemical reactions.

What is the limiting reactant in the combustion reaction of C3H6 and O2 when 155 g of C3H6 react with 355 g of O2?

O2 is the limiting reactant.

How many grams of water are produced when the limiting reactant (O2) is used in the reaction with C3H6?

133 g of H2O will be produced.

What substances will be present when the reaction of sodium with water stops, given sodium is the limiting reactant?

Hydrogen gas and hydroxide will be present.

What is the theoretical yield of sodium hydroxide when 25.0 g of sodium is used as the limiting reactant?

43.5 g of NaOH.

If the experimental yield of sodium hydroxide is 37.2 g, how do you calculate the percent yield?

Percent yield = (Experimental yield / Theoretical yield) x 100% = (37.2 g / 43.5 g) x 100% = 85.5%.