preview

Stoichiometric Determination Of Limiting Reactant

Decent Essays

Stoichiometric amount is the amount of reactants and products used in a balanced chemical equation. For example, 1 slice of cheese + 2 slices of bread ⟶ 1 sandwich the ingredients, bread and cheese, are the stoichiometric amount with the ratio 2:1. So say you have 28 slices of bread and only 11 slices of cheese you can only make 11 sandwiches and have 6 slices of bread left over. This circumstance displays how cheese slices are the limiting factor and the bread slices are the excess. Another example, H2 (s) + Cl2 (g) ⟶ 2HCl(g) reacts in a 1:1 stoichiometric ratio. How to recognize the limiting and excess reactants you have to calculate the molar amount of each reactant given and compare them to the stoichiometric amounts chown in the balanced equation. …show more content…

Although the ratio is greater than the stoichiometric ratio of 1:1 so the hydrogen is excess and the chloride is the limiting reactant. Meaning 1 mol of hydrogen will be left unreacted while the rest of the moles consume each other. Theoretical yield of the reaction is when the amount of product that can be created by the reaction, calculated using stoichiometry of an appropriate balanced chemical equation. While the actual yield is the amount of product gained and most of the time less than the theoretical yield. The equation percent yield: percent yield = (actual yield / theoretical yield) × 100%. I found it surprising how easy the book made stoichiometry sound with it comparison to everyday things like making a

Get Access