Chemical Equilibrium Test

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Chemical Equilibrium Test - 59

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Weekly Quiz Competition

Question 1
4 / -1

The compound whose 0.1 M solution is basic is

A
Ammonium acetate

B
Ammonium chloride

C
Ammonium sulphate

D
Sodium acetate
Question 2
4 / -1

The term pH comes from

A
pure hydrogen content

B
“potenz de hydrogen” which implies potential of hydrogen

C
purity of hydrogen ions in solution

D
name of the scientist associated
Question 3
4 / -1

When equal volumes of the following solutions are mixed, precipitation of AgCl(K_sp = 1.8 × 10^–10) will occur only with

A
10^–4 MAg⁺ and 10^–4 Cl^–

B
10^–5 MAg⁺ and 10^–5 Cl^–

C
10^–6 MAg⁺ and 10^–6 Cl^–

D
10^–10 MAg⁺ and 10^–10 Cl^–
Question 4
4 / -1

The pK_a of acetyl salicyclic acid (aspirin) is 3.5. The pH of gastric juice in human stomach is about 2-3 and pH in the small intestine is about 8. Aspirin will be

A
unionised in the small intestine and in the stomach

B
completely ionised in the small intestine and in the stomach

C
ionised in the stomach and almost unionised in the small intestine

D
ionised in the small intestine and almost unionised in the stomach
Question 5
4 / -1

The compound whose water solution has the highest pH is

A
NaCl

B
NaHCo₃

C
Na₂CO₃

D
NH₄Cl
Question 6
4 / -1

The acidic buffer solution can be prepared by mixing solutions of

A
Sodium acetate and acetic acid

B
Ammonium chloride and ammonium hydroxide

C
Sulphuric acid and sodium sulphate

D
Sodium chloride and sodium hydroxide
Question 7
4 / -1

Amongst the following hydroxides, the one which has the lowest value of Ksp at ordinary temperature (about 25^o C) is

A
Mg(OH)₂

B
Ca(OH)₂

C
Ba(OH)₂

D
Be(OH)₂
Question 8
4 / -1

Out of Ca²⁺, Al³⁺, Bi³⁺, Mg²⁺ and Zn²⁺ the reagents NH₄Cl and aqueous NH₃ will precipitate

A
Ca²⁺, Al³⁺

B
Al³⁺, Bi³⁺

C
Bi³⁺, Mg²⁺

D
Mg²⁺, Zn²⁺
Question 9
4 / -1

The pH of the neutralisation point of 0.1 N ammonium hydroxide with 0.1 N HCl is

A
1

B
6

C
7

D
9
Question 10
4 / -1

Aqueous solution of acetic acid contains

A
CH₃COO^– and H⁺

B
CH₃COO^–, H₃O⁺ and CH₃COOH

C
CH₃COO^-, H₃O⁺ and H⁺

D
CH₃COOH, CH₃COO^– and H⁺

Solution

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Chemical Equilibrium Test - 59

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Chemical Equilibrium Test - 59

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Question 1

Ammonium acetate

Ammonium chloride

Ammonium sulphate

Sodium acetate

Question 2

pure hydrogen content

“potenz de hydrogen” which implies potential of hydrogen

purity of hydrogen ions in solution

name of the scientist associated

Question 3

10–4 MAg+ and 10–4 Cl–

10–5 MAg+ and 10–5 Cl–

10–6 MAg+ and 10–6 Cl–

10–10 MAg+ and 10–10 Cl–

Question 4

unionised in the small intestine and in the stomach

completely ionised in the small intestine and in the stomach

ionised in the stomach and almost unionised in the small intestine

ionised in the small intestine and almost unionised in the stomach

Question 5

NaCl

NaHCo3

Na2CO3

NH4Cl

Question 6

Sodium acetate and acetic acid

Ammonium chloride and ammonium hydroxide

Sulphuric acid and sodium sulphate

Sodium chloride and sodium hydroxide

Question 7

Mg(OH)2

Ca(OH)2

Ba(OH)2

Be(OH)2

Question 8

Ca2+, Al3+

Al3+, Bi3+

Bi3+, Mg2+

Mg2+, Zn2+

Question 9

1

6

7

9

Question 10

CH3COO– and H+

CH3COO–, H3O+ and CH3COOH

CH3COO-, H3O+ and H+

CH3COOH, CH3COO– and H+

Solution

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10^–4 MAg⁺ and 10^–4 Cl^–

10^–5 MAg⁺ and 10^–5 Cl^–

10^–6 MAg⁺ and 10^–6 Cl^–

10^–10 MAg⁺ and 10^–10 Cl^–

NaHCo₃

Na₂CO₃

NH₄Cl

Mg(OH)₂

Ca(OH)₂

Ba(OH)₂

Be(OH)₂

Ca²⁺, Al³⁺

Al³⁺, Bi³⁺

Bi³⁺, Mg²⁺

Mg²⁺, Zn²⁺

CH₃COO^– and H⁺

CH₃COO^–, H₃O⁺ and CH₃COOH

CH₃COO^-, H₃O⁺ and H⁺

CH₃COOH, CH₃COO^– and H⁺