What is the standard enthalpy of formation for HCl?

−92.3 kJ/mol.
The standard enthalpy of formation of HCl(g) is −92.3 kJ/mol.

How do you calculate standard enthalpy of atomization?

When pressure is held constant, the heat change is equal to the change in the system’s internal energy. Hence, the enthalpy of atomisation is equal to the sum of the total enthalpies of vaporization and fusion.

What is the standard enthalpy of atomization give an example?

Enthalpy of atomisation, ΔaH0, is the change in enthalpy when one mole of bonds are completely broken to obtain atoms in the gas phase. For example: atomization of methane molecule.

What is meant by enthalpy of atomization?

Definition. Enthalpy of atomization is the amount of enthalpy change when a compound’s bonds are broken and the component atoms are separated into individual atoms. Enthalpy of atomization is denoted by the symbol ΔatH.

What is the formation reaction for HCl?

Hydrogen chloride may be formed by the direct combination of chlorine (Cl2) gas and hydrogen (H2) gas; the reaction is rapid at temperatures above 250 °C (482 °F). The reaction, represented by the equation H2 + Cl2 → 2HCl, is accompanied by evolution of heat and appears to be accelerated by moisture.

What is the delta H of NaOH HCl?

-57.9 kJ mol-1
For example, one source which gives the enthalpy change of neutralisation of sodium hydroxide solution with HCl as -57.9 kJ mol-1, gives a value of -56.1 kJ mol-1 for sodium hydroxide solution being neutralised by ethanoic acid.

What is atomization with example?

Atomization refers to breaking bonds in some substance to obtain its constituent atoms in gas phase. By extension, it also means separating something into fine particles, for example: process of breaking bulk liquids into small droplets.

What is the enthalpy of atomization give an example Shaalaa?

The enthalpy change accompanying the dissociation of one mole of gaseous substance into atoms is called enthalpy of atomization.

What is the enthalpy of atomization Shaalaa?

The enthalpy change accompanying the dissociation of all the molecules in one mole of gas phase substance into gaseous atoms is called enthalpy of atomisation.

What is the enthalpy of atomization Class 12?

What does atomization mean in chemistry?

Atomization is the process of converting an analyte in solid, liquid or solution form to a free gaseous atom. It is the transformation of a bulk liquid into a spray of liquid droplets in a surrounding gas or vacuum.