Question

How many ml ethanol is required to prepare 2 litre aqueous solution of ethanol solution having concentration 5% VIV.Solve the example.

Answer 1

Answer:

Amount of ethanol is 100 ml.

Explanation:

Since we know that v/v percentage is given as =$\dfrac{volume\ of\ the\ substance}{Total\ volume\ of\ the\ solution}$..........................(1)

Since total volume of the solution is 2000 ml.

v/v percentage is 5 %.

Let $x$ be the concentration of the ethanol in the solution.

So, using (1) equation, we get,

$\dfrac{5}{100} = \dfrac{x}{2000}$

$x = 100\ ml$

So, amount of ethanol is 100 ml.