CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A bottle of an aqueous H2O2 solution is labelled as 28 V H2O2 and the density of the solution in g/mL is 1.335. Choose the correct option. 
  1. Molality of H2O2 solution is 5
  2. Molality of H2O2 solution is 2
  3. Molality of H2O2 solution is 4
  4. None of these 


Solution

The correct option is B Molality of H2O2 solution is 2
Molarity=Given volume strength11.2
M=2811.2=2.5 M
Density(d)=mass(m)Volume(v)
As 1000 mL of solution contain 2.5 mole of H2O2.
Mass of solution=d×v
mass of solution=1.335 g/mL×1000 mL
mass of H2O2=Moles×molar mass of H2O2
=2.5 mole×34 g/mole
= 85 g
Molality=moles of soluteweight of solvent×1000
Molality=2.5133585×1000
Molality=2 m

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image