SOLUTION CHEMISTRY AND PHASE EQUILIBRIA MCQs
Which concentration term is helpful and used in respect of standard solutions?
- Normality
- Formality
- Molarity
- All of A, B, and C
All of A, B, and C
A 10% solution of sucrose contains 10g of sucrose in how much volume of the solution?
- 10 mL
- 1 mL
- 1000 mL
- 100 mL
100 mL
The number of gram equivalents of the solute dissolved per dm3 of the solution is called
- Formality
- Molarity
- Molality
- Normality
Normality
Which is a not true criterion for an idea solution?
- Free energy of mixing = 0
- Volume of mixing = 0
- Enthalpy of mixing = 0
- Obeys Raoult’s law
Free energy of mixing = 0
The number of moles of solute dissolved in 1000 gram of the solvent is called
- Molality
- Formality
- Mole fraction
- Molarity
Molality
Which cation undergoes hydration with the least heat?
- K+
- Na+
- Mg++
- Li+
K+
One ppm solution of NaOH contains 1.00 mg of the solute per how much of the volume of the solution?
- 100 mL
- 1000 mL
- 10 mL
- 1 mL
1000 mL
How much amount of NaOH is needed to prepare 100 mL of IN solution?
- 4g
- 80 g
- 40 g
- 0.4 g
4g
One litre solution of NaOH contains 4.0 g of it. What will be the difference between molarity and normality? (Molar mass = 40)
- 0.10
- 0.05
- Zero0
D..02
Zero
The molarity of a solution containing 4g NaOH per 500 mL of solution is (Mol mass = 40)
- 0.1
- 0.4
- 0.3
- 0.2
0.2
Iso-osmotic solutions are those which have the same
- Vapor pressure lowering
- Boiling point elevation
- Molality
- Osmotic pressure
Osmotic pressure
Which solution has highest normality?
- 6g NaOH 100 cm³
- 0.5N Hâ‚‚SO4
- 8g KOH per dm³
- 1N H3PO4
6g NaOH 100 cm³
The number of moles of the solute dissolved per dm3 of the solution is called
- Molarity
- Formality
- Normality
- Molality
Molarity
Solutions with components which obeys Raoult’s law over the entire composition range are considered to be
- Ideal solutions
- Regular solutions
- Dilute solutions
- Real solutions
Ideal solutions
What systems perform effectively at the top solid temperature?
- Triethylamine- water
- Aniline water
- Nicotine- water
- Phenol-water
Nicotine- water
The temperature at which two conjugate solutions change into one homogeneous solution is called
- Consolute temperature
- Eutectic point
- Critical temperature
- Transition temperature
Consolute temperature
Which solutions of HCI will exactly neutralize 10 mL of 0.2 N NaOH?
- 20 mL of 1.0 M solution
- 20 mL of 0.2 M solution
- 10 mL of 0.5 M solution
- 20 mL of 0.1 M solution
20 mL of 0.1 M solution
The law which relates the solubility of a gas to its pressure is called
- Hennery’s law
- Nernst law
- Ostwald’s law
- Raoult’s law
Hennery’s law
The number of formula weight of the solute dissolved per dm3 of the solution is called.
- Formality
- Normality
- Mole fraction
- Molality
Formality
According to Henry’s law, the mole fraction of a gas (x) dissolved in a solvent is related to the pressure of the gas
- x=k√P
- P= kx
- x=k/P
- P= k/x
x=k√P
For dilute solutions colligative properties depend on
- The number of the solute particles and irrespective of the nature of the solute and solvent
- The number of the solute particles and on their nature
C The number of the solute particles and nature of solute and solvent
- The number of the particles of the solute and nature of solvent
The number of the particles of the solute and nature of solvent
Which is not a colligative property?
- Refractive index
- Depression in F.P.
- Elevation of B.P.
- Lowering of V.P.
Refractive index
Which of following property does not depend upon the number of solute particles?
- Elevation in B.P.
- Boiling point of the solvent
- Depression in F.P
- Osmotic pressure
Boiling point of the solvent
Which will have the highest boiling point at one atmosphere?
- 0.1 M solution of BaCl2
- 0.1 M solution of glucose
- 0.1 M solution of common salt
- Both A and B
0.1 M solution of BaCl2
The freezing point of a solvent
- Will increase on adding a solute
- Will not change on adding solute
- Will decrease on adding a solute
- None of A, B, and C
Will decrease on adding a solute
If there are only two components in a solution with mole fraction XA and XB, then Which relation is true?
- XA = 1 – XB
- XA + XB > 1
- XA + XB < 1
- XA + XB = 0
XA = 1 – XB
Which solution would exhibit abnormal colligative properties?
- 0.1 M glucose
- 0.1 M urea
- 0.1 M sucrose
- 0.1 M NaCl
0.1 M NaCl
The osmotic pressure of a solution with definite composition
- Varies inversely as the volume and as the temperature directly
- Varies inversely as the temperature
- Varies directly as the volume and temperature
D Independent of the temperature and varies inversely as the volume
Varies inversely as the volume and as the temperature directly
Which solution would have the largest depression in freezing point?
- 1% AICI3
- 1% KC
- 1% BaCl2
- 1% glucose
1% AICI3
Which is not a colligative property?
- Viscosity
- Elevation in boiling point
- Depression in freezing point
- Lowering of vapor pressure
Viscosity
The flow of solvent into a solution when two are separated by a semi-permeable membrane is called
- Osmosis
- Effusion
- Diffusion
- Mixing
Osmosis
Sea water is converted into fresh water based upon the phenomenon of
- Reverse osmosis
- Sedimentation
- Diffusion
- Plasmolysis
Reverse osmosis
In dilute solutions the relative lowering of vapor pressure (Δp/p°) is related to osmotic pressure (π) by the relation
- Δp/p° = πV/RT
- Δp/p° = πRT
- Δp/p° = π
- Δp/p° = πRT/V
Δp/p° = πV/RT
Which is not affected by temperature change?
- Molality
- Formality
- ppm
- Molarity
Molality
At the same temperature, 0.1 M solution of urea is isotonic with
- 0.1 M BaCl2 solution
- 0.1 M NaCl solution
- 0.05 M urea solution
- 0.1 M glucose solution
0.1 M glucose solution
Which expression is true?
- RT = CÏ€
- C = RT/Ï€
- C = π/TR
- CÏ€ = 1/RT
C = π/RT
The relative lowering of vapor pressure of a solution on the addition of non-volatile solute
- Is equal to the sum of the mole fraction of the solute and solvent
- Is equal to the mole fraction of solute
- Depends upon the nature of the solute
- Depends upon the nature of the solute and solvent
Is equal to the mole fraction of solute
What is the normality of 2.3M Hâ‚‚SO4 solution?
- 4.6N
- 0.23N
- 2.3N
- 0.46N
4.6N
Starting with pure NH4Cl, the following is established NH4CL ⇄ NH3 + HCl. The number of components in the system is
- Three
- Two
- One
- May be two or three
One
The number of phases of a mixture of four gases enclosed in a container is
- Zero
- 4-1
- 1
- 4
1
In terms of number of phases (P), components (C) and degrees of freedom (F), the phase rule is expressed as
- P + F = C + 2
- F = P + C – 2
- P + C = F + 2
- P – F = C + 2
P + F = C + 2
The phase rule was deduced by which of the following?
- Henry
- Thomson
- Friday
- Gibbs
Gibbs
In a system, where the chemical potential of everycomponent is the same for all phases, the equilibrium is said to be in
- Composition equilibrium
- Thermal equilibrium
- Metastable equilibrium
- Mechanical equilibrium
Composition equilibrium
In a one-component system the maximum number of phases that can coexist in equilibrium is
- 3
- 2
- 1
- 4
3
The number of degrees of freedom and number of components for a system of sodium chloride solution in water containing undissolved salt, in equilibrium with water vapor, are
- 1, 2
- 4, 2
- 1, 1
- 3, 3
1,2
The maximum degree of freedom for a pure substance under equilibrium conditions is
AÂ Zero
- 3
- 2
- 1
2
The temperature at which the vapor pressure becomes equal to external pressure is called
- Boiling point
- Critical temperature
- Consolute temperature
- Saturation point
Boiling point
30 mL of an acid solution is neutralized by 15 mL of 0.2N base. The strength of acid solution is
- 0.4N
- 0.15N
- 0.3N
- 0.1N
0.1N
What is the pH of aqueous solution of sodium acetate solution?
- About 3
- About 7
- About 2
- About 9
About 9
The pH of the blood is maintained by which buffers
- NH4Cl/NH4OH
- HCI/NACl
- Tris/HC
- H2CO3/HCO3
H2CO3/HCO3
For a single-component, maximum degree of freedom system is:
- 1
- Between 3 and 6
- 3
- 2
2
- Which is the strongest acid?
- HCI
- HNO3
- H2SO4
- HCIO4
HCIO4
Which concentration term is helpful and used for very dilute solutions?
- mg/L
- Normality
- Molality
- Molarity
mg/L
The number of degrees of freedom at the triple point for the water system is
- Zero
- Two
- Three
- One
Zero
Which is partially miscible?
- Butanol and water
- Ethanol and water
- HCl and water
- Benzene and toluene
Butanol and water
The molarity of 4% NaOH solution is (Mol wt=40)
- 3.0
- 1.0.
- 2.0
- 4.0
1.0
The property which do not depend on the amount of substance are called
- Intensive Properties
- Additive properties
- Extensive properties
- Colligative properties
Intensive Properties
- Beckman thermometer reads up to
- 0.01K
- 0.1 K
- 0.001 K
- 1K
0.01K
Hydrolysis of sodium acetate produces
- Basic solution
- Neutral solution
- Acidic solution
- None of A, B, and C
Basic solution
A 10% solution of glucose freezes at
- 0°C
- More than 0°C
- Less than 0 °C
- None of A, B, and C
Less than 0 °C
Sulfur can exist in
- One phase
- Four phases
- Three phases
- Two phases
Four phases
A 10% solution of glucose contains 1 g per
- 400 mL
- 100 mL
- 1 mL
- 10 mL
10 mL
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