Question

Calculate the molality of solution which have 4 gram of naoh is dissolved in 500 gram of water

Answer 1

Answer:

molality= no of moles/weight of solvent

molecular mass of NaOH=40 gm

no of moles=4/40

=0.1 moles

weight of solvent=500/1000

=0.5 kg

molality=0.1/0.5

=0.2 m