Question
For the reaction, , graph is plotted as shown below. Identify correct statements.
A. Standard free energy change for the reaction is .
B. As in graph is positive, will not dissociate into at all.
C. Reverse reaction will go to completion.
D. When 1 mole of changes into equilibrium mixture, value of
E. When 2 moles of , changes into equilibrium mixture, for equilibrium mixture is .
Choose the correct answer from the options given below:
(1) D and E only
(2) C and E only
(3) A and D only
(4) B and C only
Solution
(A)
(B) will partially dissociates into .
(C) For reverse reaction
It is partially completed as there is equilibrium at E .
(D) For 1 mole
(E) For 2 mole
Given below are two statements:
Statement I: When an electric discharge is passed through gaseous hydrogen, the hydrogen molecules dissociate and the energetically excited hydrogen atoms produce electromagnetic radiation of discrete frequencies.
Statement II: The frequency of second line of Balmer series obtained from is equal to that of first line of Lyman series obtained from hydrogen atom.
In the light of the above statements, choose the correct answer from the options given below:
(1) Both Statement I and Statement II are true
(2) Both Statement I and Statement II are false
(3) Statement I is false but Statement II is true
(4) Statement I is true but Statement II is false
Sol.
For Ist line of lyman series in H -atom
for line of Balmer series of
As and is equal so frequency of these lines will be also equal.
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