Chemical Equilibrium Mcqs

Our collections of Multiple choice questions and answers focuses on study of Chemical Equilibrium. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate Chemical Equilibrium comprehensively.

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3.
If a buffer solution of higher pH than seven is to be made we use

Strong acid and strong base

Weak acid and strong base

Weak acid and strong base

Weak acid and its salt with strong base

4.
Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH?

0

1

2

Any one

6.
In which of the following equilibria will Kc and Kp have the same value?

PCI5 = PCI3 + Cl2

N2 + 3H2 = 2NH

2CO + O2 = CO2

N2 + O2 = 2NO

7.
Which of the following will not change the concentration of ammonia at the equilibrium ?

Increase of pressure

Increase of volume

Addition of catalyst

Decrease of temperature

8.
pH of an aqueous solution is 5.5. The hydroxyl ion conc. In the solution would be

?5.5

?8.5

10-8.5

10

9.
For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp. Which is true about the numerical value of Kp?

Kc is generally greaer than Kp

Kc is generally less than Kp

Kc is generally equal to Kp

Kc is equal to Kp if the total moles of reactants and products are equal

11.
Which set of solutes will form a buffer when dissolved in water to make 1 litter of solution?

0.0002M HCI

0.2 mole of NaCI with 0.2 mole of HNO3

0.4 mole of CH3COOH with 0.4 mole of NaOH

0.4 mole of NH3 with 0.2 mole of HCI

14.
Reaction which proceeds in both directions is called

Reversible

Irreversible

Spontaneous

Non-spontaneous

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