A mixture of two volatile liquids A and B shows a negative deviation from Raoult's law. Which of the following statements is INCORRECT regarding this mixture?
The enthalpy of mixing is negative.
The volume of mixing is negative.
The boiling point of the mixture is lower than that predicted by Raoult's law.
The intermolecular forces between A and B are stronger than the A-A and B-B interactions.
Related Questions
What is the molality of a solution where the mole fraction of the solute is 0.02 and the solvent is water?
1.13 m
0.02 m
0.98 m
55.51 m
In the reaction, . The eq.wt. of is equal to its :
mol. wt.
None of these
A solution is prepared by dissolving 0.5 moles of solute in 250 g of solvent. What is the molality of the solution?
2 m
0.5 m
1 m
4 m
100 mL of 0.1 M solution of a reductant is diluted to 1 litre, which of the following changes?
Molarity
Millimole
Milliequivalent
None of these
A 0.5 molal aqueous solution of urea () is prepared. What is the mole fraction of urea?
0.0089
0.0090
0.50
0.99
The speed of sound in air is dependent on temperature. Which of the following correctly describes this relationship?
Speed of sound decreases with increasing temperature
Speed of sound increases with increasing temperature
Speed of sound is independent of temperature
Speed of sound initially increases then decreases with increasing temperature
An increase in temperature typically causes which of the following changes in a chemical reaction?
Decrease in equilibrium constant
Increase in enthalpy change
Increase in reaction rate
Decrease in free energy change
Which of the following is NOT a method for expressing the concentration of a solution?
Molarity
Molality
Mass percentage
Density
Which of the following physical properties of a metal is significantly affected by changes in temperature?
Density
Mass
Volume
Resistivity
The least count of burette used normally in laboratory is :
0.1 mL
0.01 mL
0.2 mL
0.02 mL
