Question

* Find the molality of a solution when 980 g H2SO4 is
dissolved in 5 kg water.
(Ans. 2 m)​

Answer 1

980 is convert into kg

980/1000kg

0.980kg

0.980/5kg

0.196kg

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Answer 2

Explanation:

molar mass of H2SO4

= 2 + 32 + 4(16)

= 34 + 64

= 98 gm/mol

molality = (moles of solute)/(mass of solvent)

= (980/98) / 5

= 10/5 = 2 mol/kg ( 2 मोलल )