Chemical Equilibrium Test

Result

Chemical Equilibrium Test - 24

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Weekly Quiz Competition

Question 1
4 / -1

Which one of the following salts will produce an alkaline solution while dissolving in water?

A
NH₄Cl

B
Na₂CO₃

C
NaNO₃

D
Na₂SO₄
Question 2
4 / -1

Which is the best choice for weak base-strong acid titration?

A
Methyl red

B
Litmus

C
Phenol red

D
Phenolphthalein
Question 3
4 / -1

The aqueous solutions of HCOONa, C₆H₅NH₃Cl and KCN are respectively

A
acidic, acidic, basic

B
acidic, basic, neutral

C
basic, neutral, neutral

D
basic, acidic, basic
Question 4
4 / -1

In the titration of Na₂CO₃ and HCl, the indicator used is

A
methyl orange

B
methylene blue

C
phenolphthalein

D
litmus
Question 5
4 / -1

Relation between hydrolysis constant and dissociation constant are given. Which is the correct formula for MgCl₂?

A

B

C

D
Question 6
4 / -1

Which one of the following pair shows buffer's solution?

A
NaCl + NaOH

B
CH₃COONa + CH₃COOH

C
CH₃ COOH + CH₃ COONH₄

D
H₂SO₄ + CuSO₄
Question 7
4 / -1

For a reversible reaction, if the concentration of the reactants are doubled, the equilibrium constant will be

A
The same

B
Halved

C
Doubled

D
One fourth
Question 8
4 / -1

For the reaction SO₂ (g) + 1/2 O₂ (g) ⇌ SO₃ (g)
if, K_p = K_c (RT)^x
where, the symbols have usual meaning, then the value of x is (assuming ideality)

A
- 1

B
- (1/2)

C
1/2

D
1

Solution
Question 9
4 / -1

The rate constant for forward reaction and backward reaction of hydrolysis of ester are 1.1 ×10^-2 and 1.5 × 10^-3 per minute, respectively. Equilibrium constant for the reaction
CH₃COOC₂H₅ + H₂O ⇌ CH₃COOH + C₂H₅OH is

A
33.7

B
7.33

C
5.33

D
33.3
Question 10
4 / -1

In reaction A + B ⇌ C + D, 40 % of B has reacted at equilibrium, when 1 mole of A was heated with 1 mole of B in a 10 L closed vessel.
The value of K_C is

A
0.44

B
0.18

C
0.22

D
0.36