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Question

What chemical property of carbon monoxide makes it useful in the refining of metal ores?

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Solution

Reduction of metal oxide means removal of oxygen to refine metal to its free state. This is done with the help of reducing agents such as carbon (C) and carbon monoxide (CO). Carbon is added to the metal oxide obtained from the ore and heated. The carbon under the right condition reacts with metal oxide and takes the oxygen with it thereby reducing the metal and leaving carbon monoxide gas. If CO is used as reducing agent then the gas produced will be carbon dioxide.

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Carbon Monoxide
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