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Chemia Fizyczna test 1

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