Question

What is the amount of propyl alcohol solution in milliliters of a 12% (v/v) would require to get 5.7 mL of propyl alcohol?

Answer 1

Hint: For solving this question, we must know about the propyl alcohol solution. Propyl alcohol also known as n-propyl alcohol or 1-propanol. It is an isomeric alcohol which is used as a solvent and acts as an intermediate in various chemical manufacturing.

Complete step-by-step answer:Uses of propyl alcohol:-
The largest use of propyl alcohol is as a solvent in pharmaceuticals and in cosmetics.
Propyl alcohol is generally used as an antiseptic, used to kill gems.
It is also used in the preparation of Lacquers.
Esters and Ethers are generally formed by propyl alcohol, which are commercially very important.
It is a colorless, fragrant and flammable liquid
It is generally miscible with water and is moderately toxic.
From the question: We know that volume by volume or (%v/v), is a measure of how many millimeters of solute it contains in 100 ml of a solution.
In the case of 12% (v/v) solution, it will contain 12 ml solute of every 100 ml of solution.
This means that in order to get 5.7 ml of solute we generally need to have:-
$5.7\,ml\,of\,solute\,\, \times \,\,\dfrac{{100\,ml\,solution}}{{12\,ml\,solute}} = \,\,48\,ml\,solution$

Hence, 48 ml of solution is required in order to get a solute of 5.7 ml.

Note: Propyl alcohol can irritate the eyes, throat and nose, when exposed to air. High concentration of exposure of propyl alcohol can cause headache, dizziness, drowsiness, nausea and vomiting. Propyl alcohol is a flammable liquid and also a dangerous fire hazard.