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Chemistry - Metallurgy Question with Solution | TestHub

ChemistryMetallurgyEllingham diagram & Reduction methods, Refining of metalMedium2 minPYQ_2014

ChemistryMediummultiple choice

Upon heating with $C u_{2} S$ , the reagent(s) that give copper metal is/are

Options:(select one or more)

Answer:

B, C, D

Solution:

A] $2 C u F e S_{2} + O_{2} \overset{∆}{\to} C u_{2} S + 2 F e S + S O_{2}$
B] $4 C u O \overset{1100^{o} C}{\to} 2 C u_{2} O + O_{2}$
$2 C u_{2} O + C u_{2} S \overset{∆}{\to} 6 C u + S O_{2}$
C] $C u_{2} S + 2 C u_{2} O \overset{∆}{\to} 6 C u + S O_{2}$
D] $C u S O_{4} \overset{720^{o} C}{\to} C u O + S O_{2} + \frac{1}{2} O_{2}$
$4 C u O \overset{1100^{o} C}{\to} 2 C u_{2} O + O_{2}$
$2 C u_{2} O + C u_{2} S \overset{∆}{\to} 6 C u + S O_{2}$

Stream:JEE_ADVSubject:ChemistryTopic:MetallurgySubtopic:Ellingham diagram & Reduction methods, Refining of metal

⏱ 2mℹ️ Source: PYQ_2014

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