+91-87964 74404
FlagBACK
Question icon
Grade 12Top Engineering Colleges in India

Which of the following half-reactions is correctly balanced?
  1. MnO4- → Mn2+ + 4H2O
  2. Cu + 2Ag+ → 2Ag + Cu2+
  3. H2 + OH- → 2H2O
  4. Pb2+ + 2e- → Pb

Profile image of shefali
7 Years agoGrade 12
Answers icon

2 Answers

Profile image of Arun
7 Years ago
Dear Shefali
 
  1. Cu + 2Ag+ → 2Ag + Cu2+ is correctly balanced.
 
hence option 2 is correct
 
Regards
Arun
Profile image of Shivangi Khatter
7 Years ago
dear student
the correct answer is(D)
The charge in option (D) is balanced on both the sides.

Other Related Questions on top engineering colleges in india

question mark
I got 2 seats ,one through TNEA counselling and another through JOSAA. Which is best MIT chennai ECE or NIT trichy EEE ?
top engineering colleges in india
1 Answer Available

Last Activity: 3 Years ago

question mark
I got 98.2 percentile in session1 2022. Which is the option for me? Can I get NIT with this? Also if I consider a private college, which is better: MIT manipal or LNMIIT jaipur
top engineering colleges in india
0 Answer Available

Last Activity: 4 Years ago

question mark
1a) The binding energy of a calcium 2p electron is -349.7 eV. What would be the effective nuclear charge experienced by a calcium 2p electron? (RH = 13.6 eV)
 
top engineering colleges in india
1 Answer Available

Last Activity: 4 Years ago

question mark
My daughter has done her 10th Study in UAE & 11th / 12th study in our home town in Gujarat. Is she eligible for home state quote in NIT, Surat? What is latest update on eligibility for HS quote in NIT?
top engineering colleges in india
1 Answer Available

Last Activity: 4 Years ago

question mark
BITS Pilani for cs or IIIT Hyderabad or dtu considering I am a delhite
top engineering colleges in india
1 Answer Available

Last Activity: 4 Years ago