1. Tardigrade
  2. Question
  3. Chemistry
  4. In the following reaction, consider the following statements 2 Cr ( OH )3+3 H 2 O 2+4 OH - arrow 2 CrO 42-+8 H 2 O I. There is colour change from green precipitate to yellow coloured solution II Oxidation number of Cr changes from +3 to +6 III. Oxidation number of O in H 2 O 2 changes fro -2 to -1 Select the correct statements(s)

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Q. In the following reaction, consider the following statements
$2 Cr ( OH )_3+3 H _2 O _2+4 OH ^{-} \rightarrow 2 CrO _4^{2-}+8 H _2 O$
I. There is colour change from green precipitate to yellow coloured solution
II Oxidation number of $Cr$ changes from $+3$ to $+6$
III. Oxidation number of $O$ in $H _2 O _2$ changes fro $-2$ to $-1$
Select the correct statements(s)

General Principles and Processes of Isolation of Elements

Solution:

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III. False as O.N. of $O$ in $H _2 O _2$ changes from (-1) to $(-2)$