URI CHM 103 EXAM 4 QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
Molarity -ANSWER ✔✔M=mol solute/liters of solution
%(w/w) -ANSWER ✔✔Solute mass/solution mass
%(w/v) -ANSWER ✔✔Grams of solute/mL of solution
Equation with concentration and volume -ANSWER ✔✔(C1)(V1)=(C2)(V2)
Solution Boiling Point -ANSWER ✔✔deltatb=nK(b)M
Boiling point constant of water -ANSWER ✔✔.52 C/M
Boiling point of water -ANSWER ✔✔100 C
Solution Freezing Point -ANSWER ✔✔deltatf=nK(f)M
Osmotic Pressure -ANSWER ✔✔OP=nMRT
Universal gas constant -ANSWER ✔✔62.4 L torr/K mol
Dispersing medium -ANSWER ✔✔Solvent
Dispersed phase -ANSWER ✔✔Solute
, Colloids have tyndall effect because... -ANSWER ✔✔They're light oaths can be
seen, making them cloudy
Emulsifying/stabilizing agents -ANSWER ✔✔Prevent some colloids from
coalescing
Exergonic process -ANSWER ✔✔Gives off heat
Endergonic process -ANSWER ✔✔Absorbs heat
Entropy -ANSWER ✔✔Measurement of disorder (change in #of molecules
from product to reactant)
Gibbs Free Energy -ANSWER ✔✔G=H-TS
Enthalpy -ANSWER ✔✔Energy in chemical bonds
Spontaneous reaction -ANSWER ✔✔When the change in free energy is
negative
Reaction Rate (speed of reaction) -ANSWER ✔✔R=(change in
concentration)/(time measured)
Reaction mechanism -ANSWER ✔✔1) particles must collide
2)must have sufficient total energy
3)molecules must have a specific orientation
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
Molarity -ANSWER ✔✔M=mol solute/liters of solution
%(w/w) -ANSWER ✔✔Solute mass/solution mass
%(w/v) -ANSWER ✔✔Grams of solute/mL of solution
Equation with concentration and volume -ANSWER ✔✔(C1)(V1)=(C2)(V2)
Solution Boiling Point -ANSWER ✔✔deltatb=nK(b)M
Boiling point constant of water -ANSWER ✔✔.52 C/M
Boiling point of water -ANSWER ✔✔100 C
Solution Freezing Point -ANSWER ✔✔deltatf=nK(f)M
Osmotic Pressure -ANSWER ✔✔OP=nMRT
Universal gas constant -ANSWER ✔✔62.4 L torr/K mol
Dispersing medium -ANSWER ✔✔Solvent
Dispersed phase -ANSWER ✔✔Solute
, Colloids have tyndall effect because... -ANSWER ✔✔They're light oaths can be
seen, making them cloudy
Emulsifying/stabilizing agents -ANSWER ✔✔Prevent some colloids from
coalescing
Exergonic process -ANSWER ✔✔Gives off heat
Endergonic process -ANSWER ✔✔Absorbs heat
Entropy -ANSWER ✔✔Measurement of disorder (change in #of molecules
from product to reactant)
Gibbs Free Energy -ANSWER ✔✔G=H-TS
Enthalpy -ANSWER ✔✔Energy in chemical bonds
Spontaneous reaction -ANSWER ✔✔When the change in free energy is
negative
Reaction Rate (speed of reaction) -ANSWER ✔✔R=(change in
concentration)/(time measured)
Reaction mechanism -ANSWER ✔✔1) particles must collide
2)must have sufficient total energy
3)molecules must have a specific orientation
