Question

If 2 ml of acetone is present in 45 ml of its aqueous solution calculate the concentration of this solution

Answer 1

Hello Mate!

What is concentration?

The amount if solute present in given solution at given temperature is called concentration.

What are solute and solvent?

The component added to solvent is called solute and component that dissolve other components in it is called solvent.

Solute = Minority

Solvent = Majority

Concentration of solution = Volume of solute/Volume if solution × 100%

Volume of solution = 2 ml + 45 ml = 47 ml

Concentration = 2 ml / 47 ml × 100

= 4.25%

Hence concentration of solution is 4.25%.

Have great future ahead!

Answer 2

SOLUTIONS:

This solution contains liquid solute (acetone) mixed with a liquid solvent water (because it is an aqueous solution), so we have to calculate the concentration of the solution in terms of volume percentage of solute (acetone).

Here,

Volume of solute (acetone) = 2mL

Volume of solution = 45 mL

Now, we know that :

» Concentration of solution = Volume of solute / Volume of solution × 100

⇒ 2/45 × 100

⇒ 200/45

⇒ 4.4 per cent (by volume)

Thus, the concentration of the acetone solution is 4.4 per cent or that it is a 4.4% acetone solution (by volume).