Colligative properties Quiz 1

Question 1

The graph given below represents which type of a solution for the mixture of volatile liquids.<img  src="https://cmds-vedantu.s3.ap-southeast-1.amazonaws.com/prod/question-sets/ffb57be2-01a0-47d9-976e-38ea5f5984f6854835021518601104.png"/>

Accepted Answer

Ideal solution

Answer

Non–Ideal  solution

Answer

Elevation in boiling point

Answer

Non-Ideal solution showing positive deviation

Question 2

What amount of sodium chloride will be added to six liters of water if the freezing point of solution is  $$-5.6{}^\circ C$$  and the density of water is 1g/ml. $$\left( {{K}_{{{f}_{{{H}_{2}}O}}}}=2.65\dfrac{{}^\circ C}{m} \right)$$

Accepted Answer

370g

Answer

79g

Answer

157g

Answer

169g

Question 3

Calculate the ideal van't Hoff factor (i) value for the given compounds: $$HN{{O}_{3}},Mg{{(Cl{{O}_{3}})}_{2}},\,NaCl,\,AgN{{O}_{3}}$$

Accepted Answer

2, 3, 2, 2

Answer

3, 4, 2, 1

Answer

1, 2, 2, 2

Answer

2, 1, 1, 2

Question 4

Find the van't Hoff factor of the given aqueous solutions and arrange them in the order of their decreasing  freezing  points. (a) $$0.60\,m\,AgC{{l}_{2}}$$   (b) $$0.20\,m\,{{H}_{2}}S{{O}_{4}}$$    (c) $$0.30\,m\,NaCl$$  (d) $$0.40\,m\,MgC{{l}_{2}}$$

Accepted Answer

b = c > d > a

Answer

a > b > c > d

Answer

b > d >c >a

Answer

d > a > b = c

Question 5

In the question some of the solutions such as, $$NaCl,\,BaC{{l}_{2}},\,MgS{{O}_{4}},\,Urea,\,Ba{{(N{{O}_{3}})}_{2}}\,and\,{{H}_{2}}S{{O}_{4}}$$ are given with their respective concentration. Find the pair of solutions that are isotonic at the same temperature?

Accepted Answer

0.2 M $${{H}_{2}}S{{O}_{4}}$$  and 0.2 M $$BaC{{l}_{2}}$$

Answer

0.3 M urea and 0.3 M $$NaCl$$

Answer

0.1 M $$MgS{{O}_{4}}$$  and 0.1 M $$Ba{{(N{{O}_{3}})}_{2}}$$

Answer

0.4 M $$BaC{{l}_{2}}$$  and 0.3 M urea