Equilibrium Test

Result

Equilibrium Test - 67

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Find the percentage of ionisation of 0.2 M acetic acid solution, whose dissociation constant is $$1 .8 \times 10^{-5}$$ .

A
0.198

B
0.290

C
0.950

D
none of these

Solution
Question 2
1 / -0

For the equilibrium, $$H_2O(s) \Leftrightarrow H_2O(l),$$ which of the following is true?

A
The pressure changes do not affect the equilibrium.

B
The amount of ice that melts is more, if the pressure on the system is increased.

C
The amount of liquid that freezes is more, if the pressure on the system is increased.

D
At low pressure, the nature of equilibrium changes to forward direction
Question 3
1 / -0

The total number of different kind of buffers obtained during the titration of $$H_{3}PO_{4}$$ with NaOH are

A
3

B
1

C
2

D
0

Solution
Question 4
1 / -0

If $$pK_{ b }$$ For $$CN^-$$ at $$25^{ o } C$$ is 4.7. The pH of 0.5M aqueous NaCN solution is:-

A
12

B
10

C
11.5

D
11
Question 5
1 / -0

For the equilibrium reaction, $$H_2O(l) \rightleftharpoons H_2O(g).$$ What happens, if pressure is applied?

A
More water evaporates.

B
The boiling point of water is increased.

C
No effect on boiling point.

D
None of the above.

Solution
Question 6
1 / -0

K$$_{b_1}$$ for X(OH)$$_{3}$$ (a weak base) is 10$$^{-5}$$. What is the pH of its 0.1 M solution?

A
3

B
8

C
11

D
13

Solution
Question 7
1 / -0

$$[H^+]=\sqrt { \frac { { K }_{ w }{ K }_{ a } }{ C } } $$ is suitable for

A
$$NaCl,$$ $$NH_4Cl$$

B
$$CH_3COONa,$$ $$NaCN$$

C
$$CH_3COONa,$$ $$(NH_4)_2SO_4$$

D
$$CH_3COONH_4,$$ $$(NH_4)_2CO_3$$

Solution
Question 8
1 / -0

The silicate anion in the mineral kinetic is a chain of three $$SiO_4^{4^-}$$ tetrahedral that shares conners with adjacent tetrahedral. The mineral also contains $$Ca$$ icon $$Cu$$ ions and water molecules in a 1:1:1 ratio mineral represented as:

A
$$CaCu_2Si_{ 3 }O_{ 10 }.H_{ 2 }O$$

B
$$CaCuSi_{ 3 }O_{ 10 }.H_{ 2 }O$$

C
$$Ca_{ 2 }Cu_{ 2 }Si_{ 3 }O_{ 10 }.2H_{ 2 }O$$

D
None of these

Solution
Question 9
1 / -0

Which of the following is ionic?

A
$$HCl$$

B
$$CHCl_3$$

C
$$IF_5$$

D
$$KI$$
Question 10
1 / -0

A buffer solution can be prepared from a mixture of:

A
$${ CH }_{ 3 }COONa$$ and $$HCl$$ in 1:1 mole ratio

B
$${ CH }_{ 3 }COONa$$ and $$CH_3COOH$$ in 1:1 mole ratio

C
$${ CH }_{ 3 }COONa$$ and $$HCl$$ in 1:2 mole ratio

D
$${ NH }_{ 4 }Cl$$ and $$NaOH$$ in 1:2 mole ratio