AP EAMCET202022 Sep 2020Morning ShiftChemistrySome Basic Concepts of ChemistryActual
What will be the molality of the solution containing 18.25 ~g of HCl gas in 500 ~g of water?
Options
- A0.5 ~m
- B) 0.1 ~m
- C1 ~m
- D0.05 ~m
Correct answer
C. 1 ~m
Step-by-step solution
Given, mass of HCI =18.25 ~g Molar mass of HCI =36.5 ~g / moI Mass of water =500 ~g =0.5 ~kg Number of moles of HCI = Mass of HCl / Molar mass of HCI =18.25 / 36.6=0.5 moI Molality = Number of moles / Mass of solvent in kg =0.5 / 0.5=1 ~m Hence, molality of solution is 1 ~m , thus correct option is (3).