Chapter U4.73, Problem 1TAI

Interpretation Introduction

Interpretation:

The rearrangement of atoms to form new products must be explained.

Concept introduction:

In various chemical reactions there is exchange of atoms like single exchange and double exchange reactions. These are also known as single displacement and double displacement reactions.

Answer to Problem 1TAI

Arrangements of atoms represent the structural formula of a compound. Thus rearrangements of atoms can result new products with different properties.

Explanation of Solution

In combination reactions two or more than two molecules react to produce a single product in which rearrangements of atoms take place.

Similarly in decomposition reactions one molecule is broken down to two or more than two new molecules. Even here, rearrangerments of atoms take place.

Single or double displacement reactions also involve rearrangements of atoms.

A single exchange reaction is given below.

  $Zn+H_{2}S{O}_4\to ZnS{O}_4+H_2$

In this reaction H of H₂SO₄ is exchanged with Zn.

A double exchange reaction is given below.

  $NaCl+AgN{O}_3\to AgCl+NaN{O}_3$

In this case, Ag is exchanged with Na so AgCl and $NaN{O}_3$ is formed.

Conclusion

Thus, it is clear that atoms rearrange to form new products.