Chapter 10, Problem 8STP

Interpretation Introduction

Interpretation:

The type of reaction needs to be determined.

Concept introduction:

Molecular compounds are formed by sharing of electrons between the atoms forming covalent bonds.

Answer to Problem 8STP

Double displacement reaction.

Explanation of Solution

A. Synthesis reaction:

Synthesis reaction involves two reactants forming single product.

Example: $A+B\to AB$

B. Decomposition reaction:

A reaction where single reactant decomposes or form more than one product is known as displacement reaction.

Example: $AB\to A+B$

C. Single Replacement reaction:

Reaction where an element displaces another element from a compound

Example: $Zn+CuC{l}_2\to Cu+ZnC{l}_2$

D. Double displacement reaction:

The reaction where two compounds having cations and anion each react with other and ions exchange places.

Example: $\begin{array}{l}HCl+NaOH\to NaCl+H_{2}O\\ \left(H-OH\right)\end{array}$

Hence,

$2HI+{\left(N{H}_4\right)}_{2}S\to H_{2}S+2N{H}_{4}I$

Represent double displacement reaction.