A compound F on heating give a cracking sound and G give a reddish brown fumes when hot, and yellow when cool, and a gas H light a glowing splint and a residue J. Identify F,G,H,J. What is the name of that crack sound and the name of the compound?

Dinitrogen oxide and crackinn sound is snottites

To identify the compounds F, G, H, and J based on the given information, we can analyze the observed properties:

1. Compound F gives a cracking sound when heated: This cracking sound is usually associated with the rapid release of high-pressure gas trapped within the compound. It suggests that compound F is likely an organic compound, such as a hydrocarbon or an organic peroxide, capable of decomposing with the release of gas when heated.

2. Compound G gives reddish-brown fumes when hot, turning yellow when cool: The reddish-brown fumes imply the presence of a compound containing nitrogen. When the compound cools down, the nitrogen compound decomposes, resulting in the formation of yellow fumes. This behavior is typically observed with nitrogen-containing compounds like nitrates or nitrites.

3. Gas H ignites a glowing splint: Gas H supports combustion, which means it is likely oxygen or an oxidizing gas like chlorine or bromine. Igniting a glowing splint is a common test to identify the presence of oxygen gas, as it causes the splint to burst into flames.

4. Residue J is left behind after the reactions: Residue J suggests that some compounds are not volatile and decompose during the heating process, leaving a solid behind.

Based on these observations, we can make some assumptions about the compounds:

- Compound F is likely an organic compound that undergoes thermal decomposition, releasing a high-pressure gas, resulting in a cracking sound.
- Compound G is a nitrogen-containing compound that decomposes into reddish-brown fumes when hot, turning yellow when cool.
- Gas H is oxygen or an oxidizing gas, as it supports combustion.
- Residue J is the solid product left behind after all the reactions have occurred.

Unfortunately, without further information, it is not possible to specifically identify the compounds F, G, H, and J by name. To determine their exact identities, additional tests or information regarding their chemical compositions or structures would be required.