Ideal Solutions

Q.

What is the ideal dilute solution?

Q. Identify the false statement:

1. The volume of a solution cannot be less than the sum of the volumes of the pure solvent and the solute used to prepare the solution (binary solution of two liquids)
2. At constant $\text{T}$ and $\text{P}$, $\Delta G_{\text{mix}}$ will be necessarily negative for an ideal solution
3. An ideal binary solution cannot form an azeotropic mixture
4. In binary solutions, ideality is more of an exception rather than a rule

Q. What are the conditions for an ideal solution?

1. $\Delta V_{mix}=0$
2. $\Delta V_{mix}\ne 0$
3. $\Delta H_{mix}=0$
4. $\Delta U_{mix}=0$

Q.

Which of them is not equal to zero for an ideal solution?

1. $\Delta V_{mix}$

2. $\Delta P=P_{observed}-P_{Raoult}$

3. $\Delta H_{mix}$

4. $\Delta S_{mix}$

Q. What are the conditions for an ideal solution?

1. $\Delta V_{mix}=0$
2. $\Delta V_{mix}\ne 0$
3. $\Delta H_{mix}=0$
4. $\Delta U_{mix}=0$

Q. Which of the following is not an example of an Ideal solution?

Q. The vapour pressure of two pure liquids $\text{A}$ and $\text{B}$, that forms an ideal solution, are 100 and $900\text{torr}$ respectively at temperature $\text{T}$. This liquid solution of $\text{A}$ and $\text{B}$ is composed of 1 mole of $\text{A}$ and 1 mole of $\text{B}$. What will be the pressure, when 1 mole of this mixture has been vaporized?

1. $800\text{torr}$
2. $500\text{torr}$
3. $300\text{torr}$
4. None of these

Q. For ideal liquid- liquid solution.

1. Intermolecular forces(IMF) of solvent> IMF of solute
2. Intermolecular forces of solvent< IMF of solute
3. Intermolecular forces of solvent = IMF of solute
4. Intermolecular forces between solute and solvent = 0

Q. Which of the following is true regarding ideal solutions?

1. ${\Delta }_{\text{mix}}G>0$
2. ${\Delta }_{\text{mix}}V>0$
3. ${\Delta }_{\text{mix}}H=0$
4. ${\Delta }_{\text{mix}}S=0$

Q. Two liquids $\text{A}$ and $\text{B}$ have ${P^{\circ }}_A:{P^{\circ }}_B=1:3$ at a certain temperature. If the mole fraction ratio of $x_A:x_B=1:3$, the mole fraction of $\text{A}$ in vapour in equilibrium with the solution at a given temperature is

1. 0.1
2. 0.2
3. 0.5
4. 1

Q.

Which condition is not satisfied by an ideal solution?

1. ${\Delta }_{mix}V=0$

2. ${\Delta }_{mix}S=0$

3. Obeyance to Raoult’s Law

4. ${\Delta }_{mix}H=0$

Q. Match the following column and correct options.
$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \left(a\right)& \text{Raoult's law}& \left(p\right)& \text{Effect of pressure on solubility of gas in liquid}\\ \left(b\right)& \text{Henry's law}& \left(q\right)& \frac{P^o-P_s}{P^o}=X_B\\ \left(c\right)& \text{Ethyl alcohol + Water}& \left(r\right)& \text{Ideal solution}\\ \left(d\right)& \text{Benzene +Toluene}& \left(s\right)& \text{Azeotropic mixture}\end{array}$

1. $a\to p,b\to q,c\to s,d\to r$
2. $a\to q,b\to p,c\to s,d\to r$
   
3. $a\to q,b\to p,c\to r,d\to s$
   
4. $a\to p,b\to q,c\to r,d\to s$

Q. Liquids A and B form an ideal solution in the entire compositon range. At 350 K, the vapor pressures of pure A and pure B are $7\times {10}^3$ Pa and $12\times {10}^3$ Pa, respectively. The composition of the vapor in equilibrium with a solution containing 40 mole percent of A at this temperature is:

1. $X_A=0.28;X_B=0.72$
2. $X_A=0.76;X_B=0.24$
3. $X_A=0.37;X_B=0.63$
4. $X_A=0.4;X_B=0.6$

Q.

Which property is shown by an ideal solution?

1. It follows Raoult's law

2. 

3. 

4. All of these

Q. Which of the following statement(s) is /are correct?

Q. For an ideal solution, the correct option is:

1. ${△}_{mix}S$ = 0 at constant T and P
2. ${△}_{mix}V$ $\ne$ 0 at constant T and P
3. ${△}_{mix}H$ = 0 at constant T and P
4. ${△}_{mix}G$ = 0 at constant T and P

Q.

Which property is shown by an ideal solution?

1. It follows Raoult's law

2. 

3. 

4. All of these

Q.

All form ideal solutions except:

1. 

2. 

3. 

4. 

Q. Consider a binary mixture of volatile liquids.
For which of the following graph, solvent-solute interaction is equal to that of solvent-solvent and the solute-solute interactions?

Q.

An ideal solution is that which:

1. Shows positive deviation from Raoult's law
2. Shows negative deviation from Raoult's law
3. Has no connection with Raoult's law
4. Obeys Raoult's law