wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

What is the molality of 25.5% (w/w) H2O2 aqueous solution? (Give your answer upto two decimal places.)

Open in App
Solution

25.5% (w/w) means 25.5 g of H2O2 is present in 100 g of the solution.
Mass of solvent = 100 g - 25.5 g = 74.5 g
Number of moles of H2O2=25.5 gmolar mass of H2O2=25.5 g34 g/mol=25.534 mol
Molality of solution=number of moles of H2O2mass of solvent in kg
=25.574.5×34×1000=10.06 m

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Percentage Composition and Molecular Formula
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon