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Predict product of the following reaction :

Na2O + Cr(OH)3 

Option: 1

Na2CrO4


Option: 2

Cr3O4


Option: 3

both a & b


Option: 4

none of these


Answers (1)

As we learnt,

Na2O2 as an oxidising agent -

The powerful oxidising agent, oxides Cr(III) hydroxide to sodium chromate, Mn(II) to sodium manganate and sulphides to sulphates.

3Na{_{2}}O{_{2}}+2Cr(OH)_{3}\rightarrow 2NaOH+2Na{_{2}}CrO_{4}+2H_{2}O

Posted by

Ramraj Saini

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