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1) In N₂ +3H₂ ⇌ 2NH₃ the yield of the product will be minimum if

2) Which of the followings is a pseudo-first-order reaction?

3) In a reaction 2X + Y → M + N
If the concentration is of Y kept constant and that of X is tripled. The rate of reaction will

4) 2HI_(g) ⇌ H_2(g) + I_2(g)
For the above reaction if Kc is 0.25, then Kp for
this reaction will be

5) 1.0g mole of ethyl alcohol and 1.0g mole of acetic acid are mixed. At equilibrium 0.666g mole of the ester is present. The value of the equilibrium constant is

6) If the value of the Kc is large then it shows that the products are:

7) Catalyst can change

8) The pKa value of CH₃COOH is 4.74. The pH of an equimolar solution of acetic acid and sodium acetate is:

9) The rate expression of a reaction is, Rate = k[A][B]²
What happens to the rate of reaction if concentrations of A and B are doubled?

10) If the equilibrium constant KC value for a certain reaction is very small, then:

11) For the first-order reaction, the half-life is related to the expression k t_1/2 = 0.693. Half-life is the 1
A. Time is taken for the conc. of the product to increase to half of its original value.

12) Which one of the following factors does not affect the equilibrium position?

13) 2X+Y ⇌ Z At equilibrium 0.20 mole of X, 0.45 mole of Y and 0.15 mole of Z are present, Calculate Kc

14) The rate of first-order reaction depends on

15) One of the following is not a physical method for determination of the rate of reaction

16) The difference in energy between reactants and the transition state is called

17) The rate of chemical reaction roughly doubles for every 10°C rise in temperature. If the temperature is raised by 20°C, the rate may increase

18) All are correct about zero order except

19) A buffer is prepared by mixing the solutions of equimolar acetic acid and sodium acetate. The pH should be equal to

20) Following is an exothermic reaction
A+ B ⇌ C+ D. Which is the correct statement

21) The pH of buffer in which concentrations of salt and base are 0.1M and 0.01M respectively
(pKb = 4.0)

22) Rate of an exothermic reaction is increased by increasing all except

23) For the gas phase reaction
2X+Y ⇋ 2Z  ∆H= -ive kJ/mol. The yield of Z at equilibrium could be increased by

24) The rate of a reaction involving ions can be studied by the method

25) The solubility product of a salt AB is 0.25 mol²/dm⁶. What will be its solubility (mol/dm³)