what will be the molality of the solution containing 18.25g of HCl gas in 500g of water?
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Hi,
Given:
Mass of HCl=18.25 g
Mass of water=500g=0.5kg
To Find:
Molality of the solution
Solution:
Molality is given by the equation,
Molality=Number of moles of solute/Mass of solvent in kg
We know that,
Here solute given is HCl
Molar mass of HCl=1+35.5=36.5g
Number of moles of solute=Given mass of HCl/Molar mass of HCl
=18.25/36.5=0.5 moles
Substitute the given datas in the equation for molality
We get,
Molality=0.5/0.5=1 m
Hope this helps you.
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