A scientist wants to perform an experiment in aqueous solution in a hill station where the boiling point of water is 98.98^\circ{C}. How much urea (mol.wt 60 { g} { mol}^{-1} ) is to be added by him to 2 { kg} of water to get the boiling point 100^\circ{C} at the same place? ( {K}_{{b}}. of water =0.51 {K} { kg} { mol}^{-1} )

KEAM 2021 Physics and Chemistry Solved Paper

Question : 103 of 120

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A scientist wants to perform an experiment in aqueous solution in a hill station where the boiling point of water is 98.98°C. How much urea (mol.wt 60 g mol−1 ) is to be added by him to 2 kg of water to get the boiling point 100°C at the same place?
( Kb. of water =0.51K kg mol−1 )

60 g
120 g
180 g
240 g
1.02 g

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