PHA 317 Quiz 2 review UPDATED
ACTUAL Questions and CORRECT
Answers
in what way does the equilibrium constant for a chemical reaction depend on the molar
concentrations of the products obtained - CORRECT ANSWER - directly proportional
if a chemical reaction requires heat energy to proceed, it is called - CORRECT
ANSWER - endothermic reaction
the entropy of a pure crystalline substance is zero at absolute zero according to - CORRECT
ANSWER - third law of thermodynamics
the molar capacity of a system is defined as the heat required to raise the temp of 1 mole of a
substance by 1 degree - CORRECT ANSWER - True
enthalpy (H) of a system is best expressed as where E = internal energy, P = pressure, T= temp in
Kelvin, q= heat, C=heat capacity - CORRECT ANSWER - E + PV
the concept of latent heat is valid only if the heat absorbed or released by a system is resulting
into its change phase - CORRECT ANSWER - true
what would be the internal energy of a system which is absorbing heat adiabatically? -
CORRECT ANSWER - the internal energy of the system will decrease
a process, where the heat transfer is zero, is called - CORRECT ANSWER - adiabatic
process
select the correct statements involving 2nd law of thermodynamics - CORRECT
ANSWER - the entropy change of irreversible thermodynamic processes is always
positive
ACTUAL Questions and CORRECT
Answers
in what way does the equilibrium constant for a chemical reaction depend on the molar
concentrations of the products obtained - CORRECT ANSWER - directly proportional
if a chemical reaction requires heat energy to proceed, it is called - CORRECT
ANSWER - endothermic reaction
the entropy of a pure crystalline substance is zero at absolute zero according to - CORRECT
ANSWER - third law of thermodynamics
the molar capacity of a system is defined as the heat required to raise the temp of 1 mole of a
substance by 1 degree - CORRECT ANSWER - True
enthalpy (H) of a system is best expressed as where E = internal energy, P = pressure, T= temp in
Kelvin, q= heat, C=heat capacity - CORRECT ANSWER - E + PV
the concept of latent heat is valid only if the heat absorbed or released by a system is resulting
into its change phase - CORRECT ANSWER - true
what would be the internal energy of a system which is absorbing heat adiabatically? -
CORRECT ANSWER - the internal energy of the system will decrease
a process, where the heat transfer is zero, is called - CORRECT ANSWER - adiabatic
process
select the correct statements involving 2nd law of thermodynamics - CORRECT
ANSWER - the entropy change of irreversible thermodynamic processes is always
positive
