badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
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: Upto college level

                        

A certain amount of metal whose equivalent mass is 28 displaces 0.7L of H2 at STP from an acid, hence the mass of the element is _? Ans: 1.75g

6 years ago

Answers : (3)

Sunil Kumar FP
askIITians Faculty
183 Points
							equvalent weight of metal will be equivalentnweight of H2
no of mole pf h2 formed =pv/rt =1×.7/273×.0821 =.0312
let the weight of metal be x
x/28=.0312/2
x=1.747 g

thanks and regards
sunil kr
askIItian faculty
6 years ago
Yashasvee
11 Points
							
EQmetal=EQHydrogen 
If 22.4l of hydrogen have 2 gm or 1 mole 
So 0.7 have =0.7/22.4X2=0.06gm of H2.   Now let mass of metal be x then according to our first line eq metal =eq hydrogen     That is.  X/28=0.06/1=0.17
4 years ago
ABC
11 Points
							Equivalent w.t. of metal ÷ Equivalent w.t. of H2 = E/1-------(a)Also (mass of metal/ mass of H2 displaced) = E/1 -------(b)given E = 28 We know that 1 mole of H2 i.e of 2gm have volume = 22.4L so in .7 L .06gm H2 is present So according to formula (b) mass of metal/ mass of H2 displaced = E/1So mass of metal/.06 =28/1mass of metal= 1.75 g ( app.)
						
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

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


Course Features

  • 141 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