Question

15ml of alcohol is mixed in 45ml ofwater
Calculate v/v percentage
at the solution

Answer 1

Answer:

• Volume of water (Solvent) = 45 ml
• Volume of alcohol (Solute) = 15 ml

Volume of Solution:

⇒Volume of Solution = ( Volume of solute + Volume of solvent )

⇒Volume of Solution = 15 + 45

⇒Volume of Solution = 60 ml

Percentage by volume :

$\footnotesize\implies( V/V \% )= \dfrac{volume \: of \: solute}{volume \: of \: solution} \times 100$

$\footnotesize\implies( V/V \% )= \dfrac{15}{60} \times 100$

$\footnotesize\implies( V/V \% )= \dfrac{15}{6} \times 10$

$\footnotesize\implies( V/V \% )= \dfrac{150}{6}$

$\footnotesize\implies \underline{ \boxed{ \bf{( V/V \% )= 25\%}}}$

Answer 2

Question:-

• 15ml of alcohol is mixed in 45ml of water  Calculate v/v percentage  of the solution

Answer:-

• The concentration of the solution in the terms of v/v % is 25 percentage

Explanation:-

Given that:-

• The volume of alcohol is 15 ml ( Solute )
• The volume of water is 45 ml ( Solvent )

To Find :-

• The concentration in the form of volume / volume percentage

Formula Used:-

$\leadsto \pink{\boxed{\purple{ \bf { V /v \% = \frac{Volume \; of \; Solute}{Volume \; of solution } \times 100 }}}}$

Information Required:-

• The sum of the volume of the solute and the solvent gives the volume of the solution

Required solution:-

― Now let's calculate the volume of the solution

• Volume of solution = 15ml + 45ml
• Volume of solution = 60 ml

$\bigstar$ Now let's use the above formula and find out the V/v%

➻ V / v % = Volume of solute / volume of solution × 100

➻ V /v % = 15 ml / 60 ml × 100

➻ V /v % = 0.25 × 100

➻$\purple{ \bf V / v \% =25 \%$  

Therefore:-

• The volume / volume percentage is 25 %

Other Formulae to find the concentration:-

${ : \implies} \bf ppm = \dfrac{Mass \; of \; solute \; component}{Total \; mass \; of \; solution} \times 10^6$

${ : \implies } \bf ppb = \dfrac{Mass \; of \; solute \; component}{Total \; mass \; of \; solution} \times 10^9$

${ : \implies } \bf Formality = \dfrac{W_B ( g )}{GFM} \times \dfrac{1000}{V _{(ml})}$

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