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Which of the following statement is inco...

Which of the following statement is incorrect.
(i) Entropy is measure of disorder.
(ii) Entropy is not a state function.
(iii) Entropy is expressed in the units of J/K/mol.
(iv) The spontaneous process always accompanies the decrease in free energy.

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(ii) Entropy is not a state function
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Which of the following reactions are accompanied by increase in entropy? (i) N_(2)(g) (1 atm) to N_(2)(g) (0.5 atm) (ii) I_(2)(g) to I_(2)(s)

Work done by the system in isothermal reversible process is w_(rev.)= -2.303 nRT "log"(V_(2))/(V_(1)) . Also in case of adiabatic reversible process work done by the system is given by: w_(rev.) = (nR)/(gamma -1) [T_2 - T_1] . During expansion disorder increases and the increase in disorder is expressed in terms of change in entropy DeltaS = q_(rev.)/T . The entropy changes also occurs during transformation of one state to other end expressed as DeltaS = DeltaH/T . Both entropy and enthalpy changes obtained for a process were taken as a measure of spontaniety of process but finally it was recommended that decrease in free energy is responsible for spontaniety and DeltaG=DeltaH - T DeltaS . The heat of vaporisation and heat of fusion of H_2O are 540 cal//g and 80 cal//g . This ratio of (DeltaS_(vap.))/(DeltaS_("fusion")) for water is:

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