Question

Definition molarity normality and percentage with example

Answer 1

$\textbf{Hello Mate}$☺☺

$\textbf{Question}$>>>Definition molarity normality and percentage with example

$\textbf{Answer}$>>>>

✔$\textbf{Molarity}$>>>

Molarity of a solution is defined as the number of the solute dissolved per litre of a solution.It is represented as (M).

Molarity =

$\frac{Moles.. of.. solute}{Volume.. of.. solution.. in..litres}$

It is convenient to express Volume in cm^3 or mL so that...

Molarity =

$\frac{Moles.. of..solute}{Volume.. of.. solution.. in.. mL}$ x 1000

1 litre = 1000mL.

✔$\textbf{Normality}$>>>

Normality of a solution is the number of gram equivalents of the solute dissolved per litre of a solution.It is denoted by (N).

Normality =

$\frac{Number..of.. gram.. equivalents..of.. solute}{Volume.. of.. solution.. in.. litres}$

or

Normality =

$\frac{Number.. of.. gram.. equivalents.. of.. solute}{Volume.. of... solution.. in.. mL}$ x 1000

where Gram equivalents of solute can be calculated as>>>

Gram equivalents of solute =

$\frac{Mass.. of.. solute}{Equivalent.. mass}$

$\textbf{Example}$>>>

➡Calculate the normality of a solution containing 31.5 g of hydrated oxalic acid in 1250 mL of solution.

Solution>>>

Mass of oxalic acid = 31.5 g

Using the Normality formula......

Equivalent of oxalic acid = $\frac{31.5}{63}$

= 0.5

Volume of solution = 1250 mL

N = $\frac{0.5}{1250}$ x 1000

= 0.4N

✔$\textbf{Mass percentage}$>>>

The mass percentage of a component in a given solution is the mass of the component per 100g of the solution.

Mass % of a component =

$\frac{Mass.. of..the.. component.. in.. the.. solution}{Total.. mass..of.. the.. solution}$ x 100

$\textbf{Example}$>>>

➡If 11 g of oxalic acid are dissolved in 500 mL of solution (density = 1.1 g m$\upper{L}^-1$ , what is the mass % of oxalic acid?

Solution>>>>

density = 1.1 g m$\upper{L}^-1$

Mass of solution =( 500mL ) x ( 1.1 g m$\upper{L}^-1$)

= 500 g

we
Mass of oxalic acid = 11g

Mass % of oxalic acid = $\frac{11}{550}$ x 100

= 2%

$\textbf{Be Brainly....}$

@karangrover12

Answer 2

${\Large{\textbf{\underline{Answer:-}}}}$

$\textbf{Molarity}$

Molarity of a solution is defined as the number of the solute dissolved per litre of a solution.It is represented as (M).

Molarity =

$\bf \dfrac{Moles\:of\: solute}{Volume\: of\: solution\: in\:litres}$

$\textbf{Normality}$

Normality of a solution is the number of gram equivalents of the solute dissolved per litre of a solution.It is denoted by (N).

Normality =

$\bf \dfrac{Number\: of\: gram\: equivalents\:of\:solute}{Volume\: of\: solution\:in\:mL\:or\:L} ×100$

$\textbf{Mass percentage}$

The mass percentage of a component in a given solution is the mass of the component per 100g of the solution.

Mass % of a component =

$\bf \dfrac{Mass\:of\:the\:component\: in\: the\: solution}{Total\:mass\:of\:the\: solution}×100$