Question:
At $1000^?C$,
$Zn_{\left(s\right)}+\frac{1}{2}O_{2\left(g\right)} \to ZnO_{\left(s\right)}$;
$\Delta G^{\circ} = -360\,kJ\,mol^{-1}$
$C_{\left(s\right)} + \frac{1}{2}O_{2\left(g\right)} \to CO_{\left(g\right)}$;
$\Delta G^{\circ} = -460\,kJ\,mol^{-1}$
The correct statement is
At $1000^?C$,
$Zn_{\left(s\right)}+\frac{1}{2}O_{2\left(g\right)} \to ZnO_{\left(s\right)}$;
$\Delta G^{\circ} = -360\,kJ\,mol^{-1}$
$C_{\left(s\right)} + \frac{1}{2}O_{2\left(g\right)} \to CO_{\left(g\right)}$;
$\Delta G^{\circ} = -460\,kJ\,mol^{-1}$
The correct statement is
Updated On: Jul 6, 2022
- zinc can be oxidised by carbon monoxide
- zinc blend is produced during the reaction
- zinc oxide can be reduced by graphite
- zinc can be oxidised by graphite
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The Correct Option is C
Solution and Explanation
Answer (c) zinc oxide can be reduced by graphite
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Notes on General Principles and Processes of Isolation of Elements
Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal