Answers

2016-03-16T11:37:33+05:30
[Cr2O7]^2- + H2O ⇋ [CrO4]^2- + 2H^+ [Cr2O7]^2-] = [CrO4]^2- at pH ≈ 6.2 ([HCrO4]^- also present) the color change is orange to yellow and the eye can't distinguish this change with sufficient accuracy to meet the standard required for an analytical indicator.
please click thanks and brainliest

0