Question

what
of
are the units
concentration​

Answer 1

molar(mol/litre), molal(mol/kg)

Answer 2

$\huge\red{\boxed{\bold{Answer}}}$

$\large\underline\mathrm\orange{The}$ concentrations of solutions may be expressed in the following common set of units.

$\large\underline\mathrm\red{Molarity:-}$

The molarity of a solution is the number of moles of solute present in one litre of the solution. It is expressed by $\large\underline\mathrm\blue{'M}$'.

$\large\underline\mathrm\red{Demal \: unit :-}$

The concentrations are also expressed in Demal units. One Demal unit represents one mole of solute present in one litre of the solution at 0° c. It is expressed by $\large\underline\mathrm\blue{'D}$'

$\large\underline\mathrm\red{Molality:-}$

The molality is defined as the number of moles of the solute present in 1000 g of the solvent. It is symbolised by $\large\underline\mathrm\blue{'M'}$.

$\large\underline\mathrm\red{Normality:-}$

The normality is the number of equivalents of solute present in one litre of the solution. It is expressed by $\large\underline\mathrm\blue{'N'}$.

$\large\underline\mathrm\red{Formality:-}$

The formality is the number of gram formula weight of the solute per litre of the solution. It is expressed by $\large\underline\mathrm\blue{'F}$'.