Name the following : 02
a) Two important methods for expressing concentration of a solution.
Ans :
b) Dispersed phase and dispersion medium of solid aerosol.
Ans :
Answers
Explanation:
A) volume percentage
mass by volume percentage
morality
normality
parts per million
Answer:
The concentration of a solution can be expresses in a number of ways. The important methods are:
Mass/Weight Percentage or Per cent by Mass/Weight :
It is defined as the amount of solute in grams present in 100 grams of the solution.
\small Mass\ Percentage=\frac{Mass\ of\ Solute}{Mass\ of \ Solution}\times 100
\small =\frac{Mass\ of\ Solute}{Mass\ of \ Solute+Mass\ of\ Solvent}\times 100
\small =\frac{Mass\ of\ Solute}{Volume\ of \ Solution+Density\ of\ Solution}\times 100
The ratio mass of solute to the mass of solvent is termed as mass fraction.
Thus, Mass percentage of solute = Mass fraction × 100
10% solution of sugar by mass means that 10 grams of sugar is present in 100 grams of the solution, i.e., 10 grams of sugar has been dissolved in 90 grams of wat