Chemical Engineering - Chemical Engineering Basics - Discussion

Can you explain the actual reason behind it?

Gases are compressible components.

Liquids are incompressible components.

Actually according to the organic chemistry, CCl4 cannot achieve any type of burning or charring in the presence of atmosphere.

So, it cannot control the process of combustion.

Incompressible means. Those fluid which not affected by the temperature and pressure. This cause all liquid have this property. And ccl4 is also a liquid.

CCl4 is highly stable due to equal electronegativity of chloride,

So C-atom experience equal effect.

Because it is used as fire extinguisher.

CCl4 is noncombustible because it is a stable compound.

Combustion means reaction with oxygen or burning in layman's term.

Hypothetically, for combustion of CCl4 , the following reaction would have occurred :

CCl4 + O2 -> CO2 + 2 Cl2

For feasibility of any reaction, the sum of bond energy of all the products should be less than sum of bond energy of all the reactants.

In this case, breaking of O-O, and four C-Cl bonds require more energy than forming two C-O and two Cl-Cl bonds. Hence, CCl4 does not react with Oxygen and is incombustible

Give me few other example apart from ccl4 which is incombustible.

The structure of CCl4 is tetrahedral which is geometrically stable and other such as C2H2 has unsaturation moreover S has lone pair electrons in its hybrid d orbitals and H2 also has 1s bonding which the combustible heat energy is evident to break the relevant bond energy in comparison to CCl4