1. Tardigrade
  2. Question
  3. Chemistry
  4. K 2 Cr 2 O 7 paper acidified with dilute H 2 SO 4 turns green when exposed to

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. $K _2 Cr _2 O _7$ paper acidified with dilute $H _2 SO _4$ turns green when exposed to

JEE MainJEE Main 2023

Solution:

$3 SO _2+ Cr _2 O _7^{2-}+2 H ^{+} \rightarrow 3 SO _4^{2-}+\underset{\text{green}}{2 Cr ^{+3}}+ H _2 O$