11NOT SURE, but
(A) → (Q)
(B) → (P), (Q), (R)
(C) → (P), (Q), (R), (S)
(D) → (P), (Q), (R)
Sorry, No idea abt option (T) [2] [92]
(Quantities)
(A) Molar conductance
(B) emf of a cell in operation
(C) Gibbs energy change (ΔG) for a cell
(D) Conductivity
(Factors on which dependency exist)
(P) Temperature
(Q) Concentration of species involved
(R) Nature of substance involved
(S) Stoichiometric coefficient of the cell reaction.
(T) Presence of complex forming ligand in sufficient concentration.
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6 Answers
11
4ANS GIVEN IS
P Q R T
P Q R T
P Q R S T
P Q R T
But I doubt the given ans
Let's c if someone else confirms the ans
39Molar conductance = K x V = G x l/A x 1000/Molarity where K is kappa symbol and is conductivity, G is conductance(reciprocal of resistance), l is distance of separation between electrodes and A is area of electrodes.
So (A) -> (P) as molarity depends on temperature, (Q) which is obvious, (R) as conductivity depends on nature of substance involved and (T) I am not sure about.
Emf of a cell is related to standard electrode potential of cell, number of electrons involved in cell reaction and concentrations of species by Nernst equation.
Hence (B) -> (P) [Concentrations], (Q), (R) again not sure about (T)
Gibbs Free energy change is given by delta G = -(nFE) = -2.303RT log Kc
where E is standard electrode potential.
Hence (C) -> (P) [Obvious], (Q) [Dependent on Kc], (R), (S)[n is present]
Conductivity(denoted by kappa symbol) is = 1/R x l/A = G x l/A
This you can work out for yourself.
Dunno about (T) in each of the options...how does a complex forming ligand affect electrochemistry? Will have to read coordination compounds again.
11@ Pritish,
If Molar conductance is related to = K x V = G x l/A x 1000/Molarity where K is kappa symbol and is conductivity, G is conductance(reciprocal of resistance), l is distance of separation between electrodes and A is area of electrodes........ etc all these factors, but that doesn't means Molar conductance is dependent on all these factors.
For eg, if R = roh (l/ a)... where R = resistance , roh = resistivity/ speciic resistance... and (l/z) = cell const
Here R depends upon cell const but roh doesn't
39R = roh(l/a) = roh x G" where G" is cell constant
How is molar conductance not dependent on those factors..? I didn't get you..
Okay for a certain electrode system G" is constant, G" cannot change so molar conductance cannot depend on it. But the fact here is, they have not mentioned these values for a specific system. They have mentioned in general.
roh is dependent on nature of material..ab yaad aaya...roh = m/(ne2tau)
11Are I mean roh doesn't depends on cell const. though acc to formula R = roh (l/a)... roh shuld be dependent on R and cell const.
But actulally it doesn't.
Siliarily, if Molar conductance = K x V = G x l/A x 1000/Molarity
that doesn't means it is dependent on cell const, molarity, etc.