Question

write a chemical reaction to show (a) carbon dioxide contains carbon element (b) carbon monoxide contains carbon element .​

Answer 1

When burning magnesium ribbon is reacted with Carbon dioxide and hydrogen gas. It forms white powdered MgO and black substance carbon.

Reaction:

`\tt 2Mg +CO_2 \longrightarrow 2MgO(white)+C(black)` while burning

The formation of black spot of carbon is only from carbon dioxide. It can be also shown by reaction.

`\tt 3CO_2+4Na \longrightarrow 2Na_2CO_3 + C` while heating

To prove CO content carbon element for all CO is burnt in excess to get Carbon dioxide and proceed as above.

`\tt 2CO+O_2 \longrightarrow2CO_2` while heating