Chemical Equilibrium Test

Result

Chemical Equilibrium Test - 44

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Weekly Quiz Competition

Question 1
4 / -1

The P^H of a buffer containing equal molar concentration of a weak base and its chlorides is (K_b for weak base = 2 × 10^-5) (log 2 = 0.3010)

A
5

B
9

C
4.7

D
9.3

Solution
Question 2
4 / -1

Solution of 0.1 N NH₄ OH and 0.1N NH₄Cl has P^H 9.25.Then P_{K_b}is

A
9.25

B
4.75

C
3.75

D
8.25

Solution
Question 3
4 / -1

The least soluble compound (salt) of the following is

A

B

C

D
Question 4
4 / -1

A

B

C

D

Solution
Question 5
4 / -1

What is the [OH^-] in the final solution prepared by mixing of 20.0 ml of 0.05 M HCl with 30.0 ml of 0.1 M Ba(OH)₂ ?

A
0.4 M

B
0.05 M

C
0.12 M

D
0.1 M

Solution
Question 6
4 / -1

Equimolar solution of the following were prepared in water separately. Which one of the solutions will record the highest P^H ?

A
SrCl₂

B
BaCl₂

C
MgCl₂

D
CaCl₂

Solution
Question 7
4 / -1

When H⁺ ion concentration of a solution increases

A
P^H increses

B
P^H decreases

C
no change in PH

D
P^OH decreases
Question 8
4 / -1

Which one of the following has the lowest P^H value ?

A
0.1 M HCl

B
0.1 M KOH

C
0.01 M HCl

D
0.01 M KOH

Solution
Question 9
4 / -1

P^H of a soda water bottle is

A
> 7

B
= 7

C
< 7

D
unpredictable
Question 10
4 / -1

For preparing a buffer solution of P^H 6 by mixing sodium acetate and acetic acid , the ratio of concentration of salt and acid should be, (Ka = 10^-5)

A
1 : 10

B
10 : 1

C
100 : 1

D
1 : 100

Solution