Chem 111 Chp 3

The substances formed by side reactions.

A reaction that reduces the yield of the main product by forming by-products

A chemical formula that uses the smallest whole-number subscripts to give the proportions by atoms of the different elements present

The reactant left over once the limiting reactant is used up.

The sum of the atomic masses (in u) of all of the atoms represented in a chemical formula. Often used with units of g mol-1 to represent masses of ionic substances.

The reactant that determines how much product can form when nonstoichiometric amounts of reactants are used.

The desired reaction between the reactants as opposed to competing reactions that give by-products.

The mass of one mole of a substance; the mass in grams equal to the sum of the atomic masses of the atoms in a substance, with units of g mol-1

A chemical formula that gives the actual composition of one molecule.

The sum of the atomic masses (in u) of all of the atoms represented in a molecular chemical substance; also called the molecular weight. May be used with units of g mol-1.

The SI unit for amount of substance; the formula mass in grams of an element or compound; an amount of a chemical substance that contains 6.022 × 1023 formula units.

A list of the percentages by weight of the elements in a compound.

The ratio (taken as a percent) of the mass of product obtained to the mass calculated from the reaction's stoichiometry.

A reaction the occurs simultaneously with another reaction (the main reaction) in the same mixture to produce by-products

The yield of a product calculated from the reaction's stoichiometry.