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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: INeedSerotonin on July 16, 2019, 09:08:46 AM

Title: How can one know the products of CuO + C?
Post by: INeedSerotonin on July 16, 2019, 09:08:46 AM

(https://i10.servimg.com/u/f10/13/38/65/79/exerci12.png)

Hello

I have to write down the reaction that is happening between CuO + C. How can I know it?

I know that the answer is Cu + CO₂, but why couldn't it be Cu₂O + CO, for example?

Thank you

Title: Re: How can one know the products of CuO + C?
Post by: Borek on July 16, 2019, 09:36:07 AM

Actually you are perfectly right that predicting final result is quite difficult without knowing relative amounts of substances involved, and definitely - in some circumstances - CO can be a product.

But judging from your other questions you are just beginning to learn chemistry, so you can safely assume the reaction goes to the simplest, most obvious products (and to completion). Besides, the image says there are reddish metallic granules present and white precipitate is observed, so the outcome is rather obvious.

Title: Re: How can one know the products of CuO + C?
Post by: INeedSerotonin on July 16, 2019, 09:45:02 AM

Thank you!  ;)

Title: Re: How can one know the products of CuO + C?
Post by: AWK on July 17, 2019, 03:30:17 AM

At temperatures below 800 C, there is also a reaction: 2CO = CO₂ + C