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NEET 2020 Chemistry : Equilibrium Quiz -1(25.06.2019)

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Question 1

For the reversible reaction :
N₂(g) + 3H₂(g)

2NH₃(g) + heat
The equilibrium shifts in forward direction -

Question 2

Which of the following statements is correct for a reversible process in a state of equilibrium?

Question 3

Which of these is least likely to act as Lewis base?

Question 4

Which one of the following pairs of solution is not an acidic buffer?

Question 5

If pH of a saturated solution of Ba(OH)₂ is 12, the value of its K_sp is

Question 6

What is the [OH^-] in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 mL of 0.10 M Ba(OH)₂ ?

Question 7

The dissociation constants for acetic acid and HCN at 25 °C are 1.5 x 10^-5and 4.5 x 10^-10, respectively. The equilibrium constant for the equilibrium,
CN^- + CH₃COOH

HCN + CH₃COO^-
would be

Question 8

For a given exothermic reaction, K_p and K_p^’ are the equilibrium constants at temperatures T₁ and T₂ respectively. Assuming that heat of reaction is constant in temperatures range between T₁ and T₂, it is readily observed that:

Question 9

A weak acid, HA, has a K_a of 1.00×10^-5. If 0.100 mole of this acid is dissolved in one litre of water, the percentage of acid dissociated at equilibrium is closest to :

Question 10

Calculate the pOH of a solution at 25 °C that contains 1×10^-10 M of hydronium ions.

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