CHEM 103 EXAM 2 QUESTIONS AND ANSWERS
WITH SOLUTIONS UPDATED 2026
Stoichiometric ratio - CORRECT ANSWER -the ratio of the number of moles of one reactant or
product to another reactant or product or product
Limiting reactants - CORRECT ANSWER -one or more reactants are completely consumed in the
chemical reaction
Theoretical yield - CORRECT ANSWER -the amount of product predicted from stoichiometry
taking into account limiting reagents
Percent yield - CORRECT ANSWER --relates the actual yield to the theoretical yield
- (actual yield / theoretical) x 100
Concentration - CORRECT ANSWER -is used to designate the amount of solute dissolved in a
given quantity of solvent
Molarity - CORRECT ANSWER -(moles of solute/ Liters of Solution)
Solution - CORRECT ANSWER -- homogeneous mixture
Solute - CORRECT ANSWER -- one or more substances dissolved in the solvent
Solvent - CORRECT ANSWER -- the component that determines the phase of the solution
- Ex) water (most common)
, Polar molecule - CORRECT ANSWER -- partial charge
Electrolyte - CORRECT ANSWER -- conduct electricity - cuz solute is dissolved as ions
- Ex) ionic compounds - cuz will break up into ions
Strong electrolyte - CORRECT ANSWER -- completely dissociate in water
Weak electrolyte - CORRECT ANSWER -- partially dissociate in water = moderate to poor
conductors of electricity
- Ex) acetic acid
Nonelectrolyte - CORRECT ANSWER -- do not conduct electricity - cuz solute dissolves as a
molecule
- Ex) molecular compounds (CH3CH2OH)
Precipitate - CORRECT ANSWER -an insoluble solid formed by a reaction in solution
Solubility - CORRECT ANSWER -The amount of that substance that can be dissolved in a given
quantity of solvent
Strong acid - CORRECT ANSWER -completely ionize in solution
Weak acid - CORRECT ANSWER -partially ionize in solution
Oxidation-Reduction reactions - CORRECT ANSWER -- where electrons are transferred from one
substance to another
WITH SOLUTIONS UPDATED 2026
Stoichiometric ratio - CORRECT ANSWER -the ratio of the number of moles of one reactant or
product to another reactant or product or product
Limiting reactants - CORRECT ANSWER -one or more reactants are completely consumed in the
chemical reaction
Theoretical yield - CORRECT ANSWER -the amount of product predicted from stoichiometry
taking into account limiting reagents
Percent yield - CORRECT ANSWER --relates the actual yield to the theoretical yield
- (actual yield / theoretical) x 100
Concentration - CORRECT ANSWER -is used to designate the amount of solute dissolved in a
given quantity of solvent
Molarity - CORRECT ANSWER -(moles of solute/ Liters of Solution)
Solution - CORRECT ANSWER -- homogeneous mixture
Solute - CORRECT ANSWER -- one or more substances dissolved in the solvent
Solvent - CORRECT ANSWER -- the component that determines the phase of the solution
- Ex) water (most common)
, Polar molecule - CORRECT ANSWER -- partial charge
Electrolyte - CORRECT ANSWER -- conduct electricity - cuz solute is dissolved as ions
- Ex) ionic compounds - cuz will break up into ions
Strong electrolyte - CORRECT ANSWER -- completely dissociate in water
Weak electrolyte - CORRECT ANSWER -- partially dissociate in water = moderate to poor
conductors of electricity
- Ex) acetic acid
Nonelectrolyte - CORRECT ANSWER -- do not conduct electricity - cuz solute dissolves as a
molecule
- Ex) molecular compounds (CH3CH2OH)
Precipitate - CORRECT ANSWER -an insoluble solid formed by a reaction in solution
Solubility - CORRECT ANSWER -The amount of that substance that can be dissolved in a given
quantity of solvent
Strong acid - CORRECT ANSWER -completely ionize in solution
Weak acid - CORRECT ANSWER -partially ionize in solution
Oxidation-Reduction reactions - CORRECT ANSWER -- where electrons are transferred from one
substance to another
