Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Priyanshu kumar Best Answer
Cr(OH)3(s) +IO3(-)(aq) -->CrO4(-2)(aq) + I(-)(aq) remember in basic medium firstbalancing of oxidation number then balancing of O atom.Balancing of O atom is made by using H2O and OH- ions add desired molecules of H2o on the side rich in O atoms and double OH- on oppsite side Cr+3 ---CrO42- Cr+3 + 8OH- ----------CrO42- +3e- +4H2O 3H2O +6E- +IO3- ---------I- +6OH- Balance 2Cr(OH)3 + IO3- + 4 OH- --> 2 CrO4(2)- + I- + 5H2O Ratio of b:a=1:2
Thankyou so much.