Question

Define morality of a solution air 2 also write it's formula ​

Answer 1

The chemical formula of hydrochloric acid = HCl

The chemical formula for Water = H2O

The molecular weight of HCl = 35.5 ×1 + 1×1 = 36.5 moles/gram

The molecular weight of H2O = 1 ×2 + 16 ×1 = 18 moles/gram

Given, mass of hydrochloric acid in the solution = 1.56 g

The number of moles of hydrochloric acid =

nT=massingramsmolecularweight

nT=1.5636.5=4.27×10−2mole

Now, given volume of the solution = 26.8 mL

Expressing the volume in terms of litres,

volume=26.81000=2.68×10−2Litre

Now, we calculate the molarity of the solution using the formula given above.

Molarity=Numberofmolesofelementvolumeofsolutioninlitres

Molality=4.27×10−22.68×10−2=1.59M

The molarity of the solution is 1.59 M.