A colloidal solution of gold nanoparticles is prepared by reduction of . Which of the following methods is MOST EFFECTIVE for purifying this solution from excess reactants and small ionic byproducts?
Filtration
Centrifugation
Dialysis
Evaporation
Related Questions
A standard solution is one whose :
Concentration is 1
Concentration is unknown
Concentration is known
None of the above
Which method is employed for concentrating sulfide ores?
Froth flotation
Magnetic separation
Leaching
Gravity separation
The least count of burette used normally in laboratory is :
0.1 mL
0.01 mL
0.2 mL
0.02 mL
Which of these is the correct formula for calculating molality?
Moles of solute / Liters of solution
Moles of solute / Kilograms of solvent
Grams of solute / Liters of solution
Grams of solute / Kilograms of solvent
A standard solution is one whose :
Concentration is 1
Concentration is unknown
Concentration is known
None of the above
The least count of burette used normally in laboratory is :
0.1 mL
0.01 mL
0.2 mL
0.02 mL
Which of the following is NOT a method for expressing the concentration of a solution?
Molarity
Molality
Mass percentage
Density
Chromite ore is concentrated by:
Magnetic separation
Froth flotation
Leaching
Gravity separation
What is the unit of molarity?
mol/kg
mol/L
g/L
g/mol
Molality is defined as the number of moles of solute per:
Liter of solution
Kilogram of solvent
Kilogram of solution
Liter of solvent
