Which method is best suited for separating a mixture of two immiscible liquids with different densities?
Distillation
Separating funnel
Chromatography
Sublimation
Related Questions
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
What volume of 0.40 would be required to react with the liberated by adding excess of KI to 50 mL of 0.20 solution?
12.5 mL
25 mL
50 mL
2.5 mL
How many litre of at STP will be liberated by the oxidation of with 10 g ?
3.54 litre
7.08 litre
1.77 litre
None of these
Which technique is employed to separate two miscible liquids with a significant difference in their boiling points?
Simple distillation
Fractional distillation
Chromatography
Sublimation
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.
Which of the following is NOT a method for expressing the concentration of a solution?
Molarity
Molality
Mass percentage
Density
In the standardization of using by iodometry, the equivalent weight of is :
$\begin{array}{*{20}{l}}
{\left( {molecular{\rm{ }}weight} \right)/2}
\end{array}$
$\begin{array}{*{20}{l}}
{\left( {molecular{\rm{ }}weight} \right)/6}
\end{array}$
$\begin{array}{*{20}{l}}
{\left( {molecular{\rm{ }}weight} \right)/3}
\end{array}$
Same as molecular weight
Which method is employed for concentrating sulfide ores?
Froth flotation
Magnetic separation
Leaching
Gravity separation
A binary solution of liquids A and B shows positive deviation from Raoult's law. Which of the following statements is TRUE?
The intermolecular forces between A and B are weaker than those between A-A and B-B.
The intermolecular forces between A and B are stronger than those between A-A and B-B.
The solution exhibits a negative deviation from Raoult's law.
The total vapor pressure of the solution is less than the sum of the vapor pressures of the pure components.
How many moles of solute are present in a 2 molal solution containing 250g of solvent?
0.25 moles
0.5 moles
1 mole
2 moles
