EEE 350 EXAM QUESTIONS AND ANSWERS
environmental sustainability - CORRECT ANSWER✅✅everything that we need for our survival/well-
being depends directly or indirectly on our natural environment
alkalinity - CORRECT ANSWER✅✅measure of a water's capacity to neutralize acids
adsorption - CORRECT ANSWER✅✅chemical adsorbs to the surface
absorption - CORRECT ANSWER✅✅chemical absorbs (partitions) into a phase (3D)
organic compounds (OC) - CORRECT ANSWER✅✅many are hydrophobic, energetically unfavorable
compounds to be dissolved in water
sorption - CORRECT ANSWER✅✅influences mobility, natural degradation, and engineered remediation
of pollutants
sorbate - CORRECT ANSWER✅✅substance being captured, sticking to or soaking into sorbent
sorbent - CORRECT ANSWER✅✅solid material that does the capturing
1/n < 1 - CORRECT ANSWER✅✅surface becomes saturated
1/n > 1 - CORRECT ANSWER✅✅sorbate modifies original surface + enhances sorption
octanol - CORRECT ANSWER✅✅surrogate for tissue or some fluids in animals or organic carbon on soil
partitioning - CORRECT ANSWER✅✅determines the fate of compound after it enters environment
batch reactor - CORRECT ANSWER✅✅no mass flows into or out of the reactor
, change in concentration results from chemical reaction only
ex: sealed beaker
d[C]/dt= -k[C]^n
completely mixed flow (CMFR) - CORRECT ANSWER✅✅concentration at any location within reactor
volume is constant
C_out = C_in / (1+kv/Q)
Ct/Co = e^-(Q/v + k )t
plug flow reactor (PFR) - CORRECT ANSWER✅✅not mixing between plugs as they move through the
reactor
net chemical reaction within the plug
V(dC/dt) = -VkC
Ct/Co = e^-kt
which reactor is more efficient? - CORRECT ANSWER✅✅PFR is more efficient but CMFR is more
common since it can handle the spikes in flow better
have the same flow rate, kinetics, order but better performance is the lower C_out/C_in ratio and the
lower the volume needed the better
heat internal energy - CORRECT ANSWER✅✅delta E = mc(T2-T1) MCAT
chemical internal energy - CORRECT ANSWER✅✅delta E = delta H rxn at constant volume
chemical bonds - ex: combustion of hydrocarbon fuels, metabolism of food
molecular interactions - overcoming intermolecular forces in liquid (H2O (l) to water vapor), overcoming
in solid
heat + heat capacity - CORRECT ANSWER✅✅water's heat capacity is higher than other liquids
oceans help moderate surface temp
temp buffer prevents large, rapid changes in temp + protects aquatic organisms
environmental sustainability - CORRECT ANSWER✅✅everything that we need for our survival/well-
being depends directly or indirectly on our natural environment
alkalinity - CORRECT ANSWER✅✅measure of a water's capacity to neutralize acids
adsorption - CORRECT ANSWER✅✅chemical adsorbs to the surface
absorption - CORRECT ANSWER✅✅chemical absorbs (partitions) into a phase (3D)
organic compounds (OC) - CORRECT ANSWER✅✅many are hydrophobic, energetically unfavorable
compounds to be dissolved in water
sorption - CORRECT ANSWER✅✅influences mobility, natural degradation, and engineered remediation
of pollutants
sorbate - CORRECT ANSWER✅✅substance being captured, sticking to or soaking into sorbent
sorbent - CORRECT ANSWER✅✅solid material that does the capturing
1/n < 1 - CORRECT ANSWER✅✅surface becomes saturated
1/n > 1 - CORRECT ANSWER✅✅sorbate modifies original surface + enhances sorption
octanol - CORRECT ANSWER✅✅surrogate for tissue or some fluids in animals or organic carbon on soil
partitioning - CORRECT ANSWER✅✅determines the fate of compound after it enters environment
batch reactor - CORRECT ANSWER✅✅no mass flows into or out of the reactor
, change in concentration results from chemical reaction only
ex: sealed beaker
d[C]/dt= -k[C]^n
completely mixed flow (CMFR) - CORRECT ANSWER✅✅concentration at any location within reactor
volume is constant
C_out = C_in / (1+kv/Q)
Ct/Co = e^-(Q/v + k )t
plug flow reactor (PFR) - CORRECT ANSWER✅✅not mixing between plugs as they move through the
reactor
net chemical reaction within the plug
V(dC/dt) = -VkC
Ct/Co = e^-kt
which reactor is more efficient? - CORRECT ANSWER✅✅PFR is more efficient but CMFR is more
common since it can handle the spikes in flow better
have the same flow rate, kinetics, order but better performance is the lower C_out/C_in ratio and the
lower the volume needed the better
heat internal energy - CORRECT ANSWER✅✅delta E = mc(T2-T1) MCAT
chemical internal energy - CORRECT ANSWER✅✅delta E = delta H rxn at constant volume
chemical bonds - ex: combustion of hydrocarbon fuels, metabolism of food
molecular interactions - overcoming intermolecular forces in liquid (H2O (l) to water vapor), overcoming
in solid
heat + heat capacity - CORRECT ANSWER✅✅water's heat capacity is higher than other liquids
oceans help moderate surface temp
temp buffer prevents large, rapid changes in temp + protects aquatic organisms
