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Q.

Molality of an aqueous solution that produces an elevation of boiling point of 1.00K at 1 atm pressure. (Kb for water = 0.512 K. kg. mol–1)

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a

0.195 m

b

1.95 m

c

5.12 M

d

0.512 M

answer is C.

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Detailed Solution

\large \Delta T_b=1K\\ K_b=0.512KKg\;mole^{-1}

 

\large \Delta T_b=K_bXmolality

 

\large molality=\frac{1}{0.512}=1.95m

 

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Molality of an aqueous solution that produces an elevation of boiling point of 1.00K at 1 atm pressure. (Kb for water = 0.512 K. kg. mol–1)