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Which of the following statements is fal...

Which of the following statements is false ?

A

The greater the concentration of the substances involved in a reaction, the lower the speed of the reaction

B

The point of dynamic equilibrium is reached when the reaction rate in one direction just balances the reaction rate in the opposite direction

C

The dissociation of weak electrolyte is a reversible reaction

D

The presence of free ions facilitates chemical changes

Text Solution

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The correct Answer is:
B

At equilibrium, the rate of rorward and backward reactions become equal.
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A2Z-CHEMICAL EQUILIBRIUM-Application Of Equllibrium Constant (K)
  1. The rate at which a substance reacts, depends on its:

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  2. For the reaction A+B hArr C+D, the initial concentrations of A and B a...

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  3. Which of the following statements is false ?

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  4. If in the reaction N(2)O(4) = 2N(2) , alpha is that part of N(2)O(4) w...

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  5. 4.5 moles each of hydrogen and iodine heated in a sealed 10 litrevesel...

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  6. 1.50 moles each of hydrogen and iodine is p[laced in a sealed 10 litre...

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  7. In a 0.25 L tube dissociation of 4 mol of NO is taking place. If its d...

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  8. On decomposition of NH(4)HS , the following equilibrium is estabilishe...

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  9. 15 moles of H(2) and 5.2 moles of I(2) are mixed are allowed to attain...

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  10. 1.1 mole of A mixed with 2.2 mole of B and the mixture is kept in a 1 ...

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  11. An equilibrium mixture in a vessel of capacity 100 litre contain 1 mo...

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  12. The reaction, PC1(5)hArrPC1(3) + C1(2) is started in a 5 litre contain...

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  13. Some gaseous equilibrium are given below: CO + H(2)OhArrCO(2) + H(2)...

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  14. In a container equilibrium N(2)O(4) (g)hArr2NO(2) (g) is attained at 2...

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  15. Ammonia gas at 15 atm is introduced in a rigid vessel at 300 K. At equ...

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  16. K(c) = 9 for the reaction, A + B hArrC + D. If A and B are taken in eq...

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  17. For the reaction A(2)(g) + 2B(2)hArr2C(2)(g) the partial pressure of A...

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  18. In the reaction C(s)+CO(2)(g) hArr 2CO(g), the equilibrium pressure is...

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  19. The degree of dissociation of SO(3) at equilibrium pressure is: K(p) f...

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  20. The equilibrium N(2) (g) + O(2) (g)hArr 2NO (g) is established in a re...

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