MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12th pass
        
Question Number 26 from chapter hydrogen. How is the strength calculated in terms of %?
4 months ago

Answers : (3)

Arun
20401 Points
							

When a 3% solution of H2O2 decomposes completely, it produces 10 times as much volume of gas as was the initial volume of liquid. This is the common hydrogen peroxide available in stores. I buy it often.

So, it would seem intuitive that "20 volume Hydrogen Peroxide" would be a 6% solution.

To check, let's take 1 liter of H2O2 and let it decompose: 20 liters of O2 is 20/22.4 = 0.893 moles of O2. To get 0.893 moles of O2, you must have started with 2 x 0.893 = 1.786 moles of H2O2, which weighs 60.7 grams. Looks like it's close to 6% (ignoring density of the 6% solution).

4 months ago
aayeshaa
25 Points
							I didn`t get it.I found its strenght  as 6.07 How can i convert it to %strength
						
4 months ago
Arun
20401 Points
							
Dear student
 
6.07 represents percentage here. As options are given in integers hence answe is 6 %.
 
hope it helps
 
Regards
Arun
4 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 728 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details