Chapter 8.2, Problem 26PP

Interpretation Introduction

Interpretation:

The formula of dihydrogen oxide needs to be determined.

Concept introduction:

Using valency or charge on an atoms present in the compound, the formula of a compound can be determined.

Answer to Problem 26PP

$H_{2}O:$ Dihydrogen oxide

Explanation of Solution

Hydrogen ion $:H^{+}$

Oxide ion $:O^{-2}$

$\to$ From Cross − valency method,

${\text{H}}^{+1}\xcancel{}{\text{O}}^{-2}\to {\text{H}}_{\text{2}}\text{O}$

$\to H_{2}O$ commonly known as water is a neutral compound and it is a universal solvent.

$\to$ Water behaves in different way with different substances (charges and polar non - polar).

$\to$ The molecules are polar, with partial positive charges on H − atom and partial negative charge on oxygen.

$\to$ Water has $s{p}^3$ hybridization and bent structure.

Conclusion

The formula of Dihydrogen oxide is $H_{2}O$.