Block D and F Elements Class 12th Chemistry Ncert Solutions Chemistry Class 12th

8.24 Describe the preparation of potassium dichromate from iron chromite ore. What is the effect of increasing pH on a solution of potassium dichromate?

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Payal Gupta | Contributor-Level 10

8 months ago

8.24 Potassium dichromate is prepared from chromite ore (FeCr₂O₄) by the following steps:

Step1: Preparation of sodium dichromate in the reaction of Chromite ore with sodium hydroxide and oxygen gas.

4FeCr₂O₄ + 16NaOH + 7O₂? 8Na₂CrO₄ + 2Fe₂O₃ + 8H₂O

Step2: Conversion of Sodium Chromate on reaction wit

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Chemistry Ncert Solutions Class 12th 2023

Chemistry Ncert Solutions Class 12th 2023

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