Question

Give a test that can be used to confirm the presence of carbon in a compound.
With a valency of 4, how is carbon able to attain noble gas configuration in its
compounds?​

Answer 1

Answer:

lime water test can be used to test the presence of CO2 ie. Carbon.

Carbon show high catenation property and can accept and also release electrons with ease that is why it can attain noble gas config

Answer 2

The presence of carbon in a compound is detected with the help of passing the gas into lime water.

Explanation:

We can identify the presence of carbon in a compound by the following:-

1. We burn the compound in the air or in oxygen.

2. Gas will turn lime water milky.

3. The organic compound is detected by heating sodium metal to convert it to NaCN.

4. Calcium oxide can convert carbon into carbon monoxide which burns with a blue flame.

5. Copper oxide will convert carbon into carbon dioxide which will turn lime water milky.

6. Copper wire will give a bluish-green flame.