Chemistry - Salt Analysis Question with Solution | TestHub

ChemistrySalt AnalysisTEST OF CATIONS Dry Test, Group Analysis, Group 1,2Easy2 minPYQ_2023

ChemistryEasysingle choice

During the borax bead test with ${CuSO}_{4}$ , a blue green colour of the bead was observed in oxidising flame due to the formation of

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Answer:

Solution:

Blue green colour is due to formation of $Cu {({BO}_{2})}_{2}$ . Copper gives blue green colour in borax bead test. Reactions which lead to formation of borax bead:

${CuSO}_{4} \overset{Δ}{⟶} CuO + {SO}_{3}$

$CuO + B_{2} O_{3} \to Cu {({BO}_{2})}_{2}$

Stream:JEESubject:ChemistryTopic:Salt AnalysisSubtopic:TEST OF CATIONS Dry Test, Group Analysis, Group 1,2

⏱ 2mℹ️ Source: PYQ_2023

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