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Chemia Fizyczna test 1

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Pytanie 1
For a perfect gas:
the enthalpy does not depend on pressure
Molar entropy does not depend on pressure
pV is proportional to absolute temperature
Molar entropy always increases with temprerature
Cv=Cp-nR
Pytanie 2
In a reversible adiabatic process:
ΔU=w but only for perfect gas
ΔT=0
ΔU=ΔH+Δ(pV) but only for perfect gas
ΔU=w
q+w=TΔS
Pytanie 3
The standard enthalpy of combustion of a compound:
doesn’t depend on temperature
is the the heat effect of reaction of combustion of 1 mole of a compound in air at standard pressure
is defined at standard pressure
is equal to TΔcSo+ΔcGo
Pytanie 4
The entropy change in an isothermal decompression of a perfect gas against constant pressure p_ext
none from above
is equal to zero
is equal to (C_v razy delta T)/T
is equal to delta(pV)/T
is equal to -delta(pV)/T
Pytanie 5
In first order phase transition:
The transition entropy is delta H=T delta trans S
Entropy changes in continous way
Entropy shows a discontinuity
thermal expresion coefficient shows a discontinuity
The heat capacity shows a discontinuity
Pytanie 6
The chemical potential μi:
doesn’t depend on pressure
can be defined as (dG/dξ)T
at the triple point of a substance is equal for solid, liquid and vapor
always increases with temperature
has a minimum at the critical point
Pytanie 7
the enthopy of mixing:
is equal to Rlnx in system (henry's law)
is 0 for perfect gases
is equal to RTlnx in system (henry's law)
is equal to -Rlnx in system (raoult's law)
is equal to -RTlnx in system (raoult's law)
Pytanie 8
The thermodynamic equilibrium constant K:
does not depend on the total volume of the reaction mixture
depends on the partial pressures in the reaction mixture
depends on the molar fractions of reactants and products in the mixture
does not depend on temperature
has a temperature dependence given by the Van’t Hoff law
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