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Grade: 11
        
The density of 2M NaCl solution is 1.117g mL^-1 .The molality of the solution is
one year ago

Answers : (1)

Arun
24467 Points
							
Dear Ashika
 
 
Molar mass of NaCl= 58.5
M= mass of solute/ molar mass of solute x volume
mass = 2 x 58.5 
= 117g
density = 1.117 = mass/ volume 
mass = density x volume 
= 1.117 x 1000
= 1117 g
mass of solvent = mass of solution - mass of solute 
= 1117- 117
= 1000g
molarity (m) = mass of solute /molar mass of solute x mass of solvent 
= 117 x 1000/58.5 x 1000kg
= 2m
one year ago
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