Question

What will be the molality of the solution containing 18.25 g of HCl gas in 500 g of water?​

Answer 1

Answer:

1 m

Explanation:

GIVEN

mass of HCl =18.5

molar mass of HCl= 36.5

no of moles of HCl=

mass of HCl / molar mass of HCl

=0.5 mol

Molality

=no.of moles of HCl / mass of solvent in kg

=0.5/0.5

=1 m

Answer 2

given:

mass of HCl=18.25gm

(molar mass of HCl = 36.5gm/ mol)

mass of water=500gm= 0.5kg

no of moles of HCl=mass of HCl/molar mass of HCl

=18.25/36.5

=0.5 mol

Molality=moles/mass of solvent (kg)

= 0.5/0.5

=1

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