Chemistry - Metallurgy Question with Solution | TestHub
In preparation of a very important chemical " X " used as an oxidant for preparation of many compounds, fusion of chromite ore with in presence of air takes place to obtain a yellow solution " Y ". Acidification of yellow solution " Y " gives orange solution of " X ".
The oxidation state on metal atom in anion of "X" & "Y" respectively are.
Options:
Answer:
Solution:
Question Explanation:
Finding the oxidation states of chromium in the intermediate and final products of dichromate preparation.
Concept:
Metallurgy of Chromium.
Solution:
The process described is the standard method for preparing dichromates from chromite ore.
The yellow solution " Y " contains the chromate ion , formed from the initial oxidative fusion. In chromate, the oxidation state of Cr is +6 .
The orange solution "X" is formed by acidifying "Y", and it contains the dichromate ion (Cr2 O72− ). In dichromate, the oxidation state of Cr is also +6 .
Final Answer: B. +6, +6.