Question

when sodium and chlorine ions form an ionic bond the heat that is released is called the

Answer 1

It is called the Enthalpy of formation of sodium chloride

Sodium is an element

Chlorine is an element

When two elements combine together chemically, they form a compound


That is why it is called enthalpy of formation. We are forming sodium chloride from sodium and chlorine.


The heat change, which corresponds to the reaction: 

Na+(g) + Cl-(g) NaCl(s), is also called the lattice energy of the ionic crystal.

Answer 2

Explanation:

Ag3A = 3Ag + A

3 moles of Ag combine with 3 moles of A

Mass of Ag = 0.37

Mass of A = 607 - 0.37 = 606.63

Moles of Ag = 0.37/108 = 0.003426

Moles of A = 0.003426/3 = 0.001142

Molar mass of A = 606.63/0.001142 = 531211

A tribasic acid has 3 atom of H

Molar mass of the acid = 3 + 531211 = 531214 g/mol