Can salt be lost during evaporation because after evaporating H20 from NaCl i was left with 0.1g of salt but using the equation m=n×M there should of been 0.1255g of salt. How was the salt lost?

Concentration of the NaCl=7.9M

200 ml of 1 M Nacl have Moles of NaCl = 200 × 1 / 1000 = 0.2 mole Mass of NaCl = moles of NaCl × Molar mass .Mass...

C=0.73+0.4/279+467=0.0015mol/ml

Molar mass of NaCl= 58.4414.6/58.44=0.25mol0.25/0.1= 2.5mol/L

Pa=XPa° = 83.3333 x 23.8/83,6751333= 23,7027806 torr.

As we know, □S = □H/T = 9650/373= 25.9 Cal/mole-KEntropy change = [25.9] Cal/mol-K

Quantity of NaCl =4.72g

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