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At equilibrium stage, the rate of forwar...

At equilibrium stage, the rate of forward reaction is ……….. To the rate of backward reaction.

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The rate of forward reaction becomes equal to rate of backward reaction at equilibrium.
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At equilibrium rate of forward reaction is always equal to ……….

The equilibrium constant of a reaction is 20.0 . At equilibrium, the reate constant of forward reaction is 10.0 . The rate constant for backward reaction is :

In the following reaction: 2NO_((g))+Cl_(2(g))hArr2NOCl_((g)) it is observed that equilibrium is not attained and the rate of forward reaction is greater than rate of backward reaction. Which of the following is true for the reaction ?

Which statement characterize a chemical system at equilibrium ? (P)the rate of the forward reaction is equal to the rate of the reverse reaction (Q)The concentrations of the reactants and products are equal.

At equilibrium rate of forward reaction becomes equal to rate of backward reaction.

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Knowledge Check

  • In the following reaction: 2NO_((g))+Cl_(2(g))hArr2NOCl_((g)) it is observed that equilibrium is not attained and the rate of forward reaction is greater than rate of backward reaction. Which of the following is true for the reaction ?

    A
    `K_(p)=Q_(p)`
    B
    `Q_(p)gtK_(p)`
    C
    `Q_(p)ltK_(p)`
    D
    `Q_(p)=0`

  • Which statement characterize a chemical system at equilibrium ? (P)the rate of the forward reaction is equal to the rate of the reverse reaction (Q)The concentrations of the reactants and products are equal.

    A
    P only
    B
    Q only
    C
    Both P and Q
    D
    Neither P nor Q

  • Mass action ratio or reaction quotient Q for a reaction can be calculated using the law of mass actionl, A(g)+B(g)hArrC(g)+D(g) Q=([C][D])/([A][B]) The value of Q decides whether the reaction is at equilibrium or not. At equilibrium, Q=K For non-equilibrium process QneK When QgtK , reaction will be favoured in backward direction and when QltK , it will be favoured in forward direction. In the following reaction : 2SO_(2)(g)+O_(2)(g)hArr2SO_(3)(g) The equilibrium is not attained. The rate of forward reaction is greater than that of backward reaction. Thus, which of the following is the correct relation between K_(p) and Q_(p) ?

    A
    `K_(p)=Q_(p)`
    B
    `Q_(p)ltK_(p)`
    C
    `Q_(p)ltK_(p)`
    D
    `K_(p)=Q_(p)=1`
    • MODERN PUBLICATION-EQUILIBRIUM-Conceptual Question 1
    1. At equilibrium stage, the rate of forward reaction is ……….. To the rat...

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    2. (i) What is the effect of adding a catalyst to a reversible reaction? ...

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    3. The equilibrium constant for the reaction: N2 + 3H2 hArr 2NH3 is K. ...

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    4. A system at equilibrium is described by the equation SO(2)Cl(2) hArr...

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    5. Why does solubility of CO2 decrease with rise in temperature ?

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    6. The equilibrium constants of a reaction at 27^@C and 127^@C are 1.6 xx...

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    7. The equilibrium constants for the reactions : N2+O2 hArr 2NO 2NO+ ...

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    8. What does the equilibrium constant K less than 1 indicate ?

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    9. For an exothermic reaction, what happens to the equilibrium constant i...

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    10. What is the name for a type of reaction that does not go all the way t...

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    11. Write expressions for Kp and Kc for the decomposition reaction of calc...

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    12. The equilibrium constants for the three reactions: A+2B hArr C, " "...

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    13. Why does the dissociation of PCl5 decrease in the presence of Cl2 ?

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    14. The equilibrium constant for the reaction: SO3(g) hArr SO2(g) +1/2O...

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    15. Will the yield of C or F Increases with increase in temperature ? A+...

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    16. At 500 K, Kc for the reaction: H2(g) + D2(g) hArr 2HD (g) is 3.6 W...

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    17. At 450 K, Kp = 2.0 xx 10^10/bar for the given reaction at equilibrium:...

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    18. Does the number of moles of reaction products increase, decrease, or r...

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    20. At 473 K, equilibrium constant K(c ) for decomposition of phosphorus p...

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