Exam Questions and Answers for CHEM 210
what will decrease the solubility of gaseous solutes - Answers increasing temperature and decreasing
the pressure
colligative properties depend on... - Answers the number of particles dissolved
delta S univ < 0 at 25*C... is it spontaneous or nonspontaneous - Answers it is nonspontaneous at room
temp.
stronger intermolecular forces effect boiling point by... - Answers increasing the boiling point
hydrogen bonding - Answers gives rise to hydration shells in an aqueous solution of hydrofluoric acid
entropy - Answers measures the amount of disorder
enthalpy - Answers measures the total heat content of a system
equilibrium constant - Answers -ratio of forward and reverse rate constants
-ratio of the concentrations of products and reactants
-dependent upon temperature
Kc>Qc what direction will the reaction go to establish equilibrium? - Answers reaction will proceed to
the right to establish equilibrium
what affects the rate of a reaction? - Answers -temperature of the reactants
-concentrations of reactants
-presence of a catalyst
-surface area of reactants
units for orders - Answers zero --> mol L-1 s-1
first --> s-1
second --> L mol-1 s-1
third --> L2 mol-2 s-1
a catalyst accelerates a reaction because - Answers it lowers the amount of energy to drive the reaction
when a catalyst is added to a reaction mixture it... - Answers provides an alternate mechanism for the
reaction
Kc=Kp when - Answers the mol of gas on each side of the equation are equal
what will decrease the solubility of gaseous solutes - Answers increasing temperature and decreasing
the pressure
colligative properties depend on... - Answers the number of particles dissolved
delta S univ < 0 at 25*C... is it spontaneous or nonspontaneous - Answers it is nonspontaneous at room
temp.
stronger intermolecular forces effect boiling point by... - Answers increasing the boiling point
hydrogen bonding - Answers gives rise to hydration shells in an aqueous solution of hydrofluoric acid
entropy - Answers measures the amount of disorder
enthalpy - Answers measures the total heat content of a system
equilibrium constant - Answers -ratio of forward and reverse rate constants
-ratio of the concentrations of products and reactants
-dependent upon temperature
Kc>Qc what direction will the reaction go to establish equilibrium? - Answers reaction will proceed to
the right to establish equilibrium
what affects the rate of a reaction? - Answers -temperature of the reactants
-concentrations of reactants
-presence of a catalyst
-surface area of reactants
units for orders - Answers zero --> mol L-1 s-1
first --> s-1
second --> L mol-1 s-1
third --> L2 mol-2 s-1
a catalyst accelerates a reaction because - Answers it lowers the amount of energy to drive the reaction
when a catalyst is added to a reaction mixture it... - Answers provides an alternate mechanism for the
reaction
Kc=Kp when - Answers the mol of gas on each side of the equation are equal
