Chemistry - Complete d-block Question with Solution | TestHub

ChemistryComplete d-blockd-blockEasy2 minPYQ_2018

ChemistryEasysingle choice

When dil. sulphuric acid reacts with aqueous solution of potassium chromate, the colour changes from yellow to orange. This shows that

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Solution:

On acidification of potassium chromate solution, yellow colour changes to orange colour due to formation of dichromate which suggests that monocentric complex is converted into dicentric complex.

$2 K_{2} {CrO}_{4} + \underset{(Dil.)}{H_{2} {SO}_{4}} ⟶ K_{2} {Cr}_{2} O_{7} + K_{2} {SO}_{4} + H_{2} O$

Stream:BITSATSubject:ChemistryTopic:Complete d-blockSubtopic:d-block

⏱ 2mℹ️ Source: PYQ_2018

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