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CBSE

Subject

Chemistry

NEET Chemistry : Equilibrium

Multiple Choice Questions

221.

Which of the following is strongest Bronsted base?

ClO-
ClO₂^-
ClO₃^-
ClO₄^-

222.

Among the following the weakest base is

C₆H₅CH₂NH₂
C₆H₅CH₂NHCH₃
O₂NCH₂NH₂
CH₃NHCHO

223.

Among the following the strongest acid is

CH₃COOH
C₆H₅COOH
m-CH₃OC₆H₄COOH
p-CH₃OC₆H₄COOH

224.

For the reaction,
2SO₂ (g) + O₂ (g) $⇌$ 2SO₃ (g) at 300 K, the value of $∆$ G° is -690.9 R. The equilibrium constant value for the reaction at that temperature is (R is gas constant)

10 atm^-1
10 atm
10
1

225.

In which of the following acid-base titration, pH is greater than 8 at equivalence point?

Acetic acid versus ammonia
Acetic acid versus sodium hydroxide
Hydrochloric acid versus ammonia
Hydrochloric acid versus sodium hydroxide

226.

The pH of aqueous solution ofammonium formate is (pK_a of HCOOH = 3.8 and pK_b of NH₃= 4.8)

227.

What is the pH of 0.01 M glycine solution? For glycine $K_{a 1} = 4.5 \times 10^{- 3} and K_{a 2} = 1.7 \times 10^{- 10} at 298 K$ ?

228.

Consider the following salts : NaCl, HgCl₂, Hg₂Cl₂, CuCl₂, CuCl and AgCl. Identify the correct set of insoluble salts in water.

Hg₂Cl₂, CuCl, AgCl
Hg₂Cl, CuCl, AgCl
Hg₂Cl₂, CuCl₂, AgCl
Hg₂Cl₂, CuCl, NaCl

229.

The pH value of decinormal solution of NH₄OH which is 20% ionised is

12.95
12.30
14.70
13.30

230.

When the temperature of reactions will increase then the effect on pH value will

increase
decrease
first increases then decreases
remains same.

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