Related Questions

Gibbs free energy at constant pressure and temperature under equilibrium conditions is
A ∞
B 0
C Maximum
D Minimum
A,B,C,D,E,G and I are seven friends who study in three different standards namely 5th, 6th and 7th such that not less than two friends study in the same standard. Each friend also has a different favorite subject namely History, Civics, English, Bangla, Science , Maths , and Economics but not necessarily in the same order. A likes Maths and studies in the 5th standard with only one other friend who likes Bangla. I studies with tow other friends . Both the friends who study with I like languages (Here languages include only Science , English and Bangla ) . D studies in the 6th standard with only one person and does not like Civics . E studies with only one friend . The one who likes history does not study in 5th or 6th standard . E does not like languages. C does not like English , Science or Civics. Which combination represents E's favorite subject and the standard in which he studies?
A Civics and 7th
B Economics and 5th
C Civics and 6th
D History and 7th
Specific/molar Gibbs free energy for a pure substance does not change during
A Sublimation
B Vaporisation
C Melting
D Either A, B or C
Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
A Proportional to
B Independent of
C Inversely proportional to
D Proportional to the square of
The free energy change for a chemical reaction is given by (where, K = equilibrium constant)
A RT lnK
B -RT lnK
C -R lnK
D T lnK
The change in Gibbs freee energy for vaporisation of a pure substance is
A Positive
B Negative
C Zero
D May be positive or negative
Gibbs free energy per mole for a pure substance is equal to the
A Latent heat of vaporisation
B Chemical potential
C Molal boiling point
D Heat capacity
Gibbs free energy (F) is defined as
A F = E - TS
B F = H - TS
C F = H + TS
D F = E + TS
Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.
A Infinity
B Minus infinity
C Zero
D None of these
Gibbs free energy of mixing at constant pressure and temperature is always
A 0
B $$\infty $$
C +ve
D -ve

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