2m urea solution is diluted from 2Kg to 5Kg by addition of water. calculate molality of diluted solution.

Question

Sunil Kumar FP · Answer

molality is the number of moles of solute dissolved in 1 kg of solvent
Inchemistry, themolality,b(orm), of asolutionis defined as theamount of substance(inmol) of solute, divided by themass(inkg) of thesolvent, (notthe mass of the solution):

[b = \frac{n_{solute}}{m_{solvent}}]
now,
2=mole of urea/2
mole of urea=4

now new molality=4/5=.2 molal

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2m urea solution is diluted from 2Kg to 5Kg by addition of water. calculate molality of diluted solution.

2m urea solution is diluted from 2Kg to 5Kg by addition of water. calculate molality of diluted solution.

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