The Total solution for NCERT class 6-12
An antifreeze solution isprepared from 222.6 g of ethylene glycol (C2H6O2)and 200 g of water. Calculate the molality of the solution. If the density ofthe solution is 1.072 g mLтИТ1, then what shall be the molarity of thesolution?
Molar mass of ethylene glycol= 2 ├Ч 12 + 6 ├Ч 1 + 2 ├Ч16
= 62 gmolтИТ1
Total mass of the solution =(222.6 + 200) g
= 422.6 g
Given,
Density of the solution = 1.072 gmLтИТ1
= 394.22 mL
= 0.3942 ├Ч 10тИТ3┬аL
= 9.11 M