Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • When solution is added to <img alt="\mathrm{NaOH}" src="https://entrancecorner.onco

When \mathrm{FeCl}_{3} solution is added to \mathrm{NaOH} a negatively charged sol is obtained. It is due to the:

Option: 1

 Presence of basic group


Option: 2

Preferential adsorption of \mathrm{OH}^{-}ions


Option: 3

Self dissociation


Option: 4

Electron capture by sol particles


Answers (1)

best_answer

When \mathrm{FeCl}_{3} sol is treated with hot water, it forms \mathrm{Fe}(\mathrm{OH})_{3} forming \mathrm{Fe}^{3+}ions(in excess amount) and these positive ions are adsorbed preferentially. Further, when \mathrm{NaOH} is mixed, again there is formation of \mathrm{Fe}(\mathrm{OH})_{3} but now \mathrm{OH}^{-}
ions are in excess. Therefore, they will get preferentially adsorb and form negatively charged colloid.    

Posted by

Devendra Khairwa

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2026 application correction begins on jeemain.nta.nic.in; edit details by December 2
anam-khan

JEE Mains 2026 LIVE: NTA to conduct session 1 from January 21 to 30; exam pattern, syllabus
anam-khan

JEE Main 2026 correction window opens tomorrow; NTA allows exam city change

Latest Question