Home
Class 11
CHEMISTRY
Le Chatlier's principle is applicable wh...

Le Chatlier's principle is applicable when
(i) `Fe(s)` and `S(s)` react to form `FeS(s)`
(ii) `PCl_5(g)` decomposes to form `PCl_3(g)` and `Cl_2(g)`
(iii) `N_2(g)` and `H_2(g)` react to form `NH_3(g)`
(iv) `H_2(g)` and `I_2(g)` react to form `HI(g)`

A

(i), (ii), (iii), (iv)

B

(i), (ii), (iii)

C

(ii), (iii), (iv)

D

(i), (iii), (iv)

Text Solution

Verified by Experts

The correct Answer is:
C
Le Chatlier's principle states that if an external stress is applied to a system at equilibrium, the system adjusts itself in such a way that the stress is partially offset. The word "stress" here means a change in concentration, pressure, volume, or temperature that removes a system from the equilibrium state.
Reaction (i) is irreversible and, thus, cannot attain the state of equilibrium. Le Chatelier's principle is of no use in this reaction.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • EQUILIBRIUM

    R SHARMA|Exercise Follow-up Test 7|6 Videos

  • EQUILIBRIUM

    R SHARMA|Exercise Follow-up Test 8|5 Videos

  • EQUILIBRIUM

    R SHARMA|Exercise Follow-up Test 5|3 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS

    R SHARMA|Exercise ARCHIVES|37 Videos

  • GENERAL ORGANIC CHEMISTRY

    R SHARMA|Exercise Archives|36 Videos

Similar Questions

Explore conceptually related problems

What will be the effect of increase in pressure on the following equilibria : (i) N_(2) O_(4) (g) hArr 2NO_(2) (g) (ii) PCI_(5) (g) hArr PCI_(3) (g) +CI_(2) (g) (iii) N_(2) (g) + 3H_(2) (g) hArr 2NH_(3) (g) (iv) H_(2) (g) + I_(2) (g) hArr 2HI (g)

Write the relation between K_(p) " and "K_(c) for the following reactions : "(i)"" " PCI_(5) (g) hArr PCI_(3)(g) +CI_(2) (g) "(ii)"" "N_(2)(g) +3H_(2)(g) hArr 2NH_(3)(g) "(iii)"" "2H_(2)O(g) hArr 2H_(2)(g) +O_(2)(g) "(iv)"" "H_(2)(g) + I_(2)(g) hArr 2HI(g)

Knowledge Check

  • For the reaction : PCl_(5) (g) rarrPCl_(3) (g) +Cl_(2)(g) :

    A
    `DeltaH = DeltaU`
    B
    `DeltaH gt DeltaU`
    C
    `Delta lt DeltaU`
    D
    None of the above

  • For the reaction, PCl_(5)(g)to PCl_(3)(g)+Cl_(2)(g)

    A
    `DeltaH=DeltaE`
    B
    `DeltaH gt DeltaE`
    C
    `DeltaH lt DeltaE`
    D
    none of these

  • Consider the reactions (i) PCl_(5)(g) hArr PCl_(3)(g)+Cl_(2)(g) (ii) N_(2)O_(4) (g) hArr 2NO_(2)(g) The addition of an inert gas at constant volume

    A
    will increase the dissociation of `PCl_(5)` as well `N_(2) O_(4)`
    B
    will reduce the dissociation of `PCl_(5)` as well as `N_(2)O_(4)`
    C
    will increase the dissociation of `PCl_(5)` and step up the formation of `NO_(2)`
    D
    will not disturb the equilibrium of the reactions.

    • Similar Questions

    Explore conceptually related problems

    What will be the effect of increased pressure on the following equilibria : (i) N_2(g) + 3H_2(g) hArr 2NH_3(g) (b) N_2O_4(g) hArr 2NO_2(g) (iii) 2SO_2(g) + O_2(g) hArr 2SO_3(g) (iv) H_2(g) +I_2(g) hArr 2HI(g)

    Complete the following reactions : (i) CuO(s) +H_(2)(g) to (ii) CO(g) +H_(2)(g) to

    In which of the following reactions, increase in temperature as well as decrease in pressure shift the equilibrium towards the forward direction : (i) PCl_5(g) hArr PCl_3(g) + Cl_2(g) " " DeltaH =+ve (ii) N_2(g) + O_2(g) hArr 2NO(g) " " DeltaH =+ve (iii) 2SO_2(g) + O_2(g) hArr 2SO_3(g) " " DeltaH =-ve (iv) N_2O_4 (g) hArr 2NO_2(g) " " DeltaH =+ve

    Unit of equilibrium constant K_p for the reaction PCL_5(g)

    Vapour density of PCl_(3) (g) and Cl_(2) (g) is 100 . Hence , van't Hoff factor for the case : PCl_(5) (g) rarr PCl_(3) (g) + Cl_(2) (g)

    Home
    Profile