Calculate mass percentage of solution containing 20% of naoh.

1.	Calculate mass percentage of solution containing 20% of naoh.
Answer» TION:Let X be the MASS of solution.Mass of NaOH=100x×20Molar mass of NaOH=40g∴ Number of MOLES= (10020x)/40=200xNow mass of solvent in the solution= x−10020x=10080x∴ Molality= (80x/100)x/200×1000=6.25M

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