Chapter 22, Problem 22.166MP

Interpretation Introduction

(a)

Interpretation:

The balance equation for the reaction of white phosphorus burnt in an excess of oxygen and the product is dissolved in enough water needs to be determined.

Concept introduction:

The main group elements tend to form oxyacids which are usually polyprotic acids like ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}{\text{, H}}_{\text{3}}{\text{PO}}_{\text{4}}{\text{, H}}_{\text{3}}{\text{PO}}_{\text{3}}$ etc. and oxides. The concentration and pH of polyprotic acid can be determined with the help of acid-base titration. The oxides of non-metals or main group elements are acidic in nature.

Interpretation Introduction

(b)

Interpretation:

ThepH of the solution that makes with reaction of 5.00g white phosphorus burnt in an excess of oxygen and the product is dissolved in enough water to make 250.0 mL needs to be detremined.

Concept introduction:

The main group elements tend to form oxyacids which are usually polyprotic acids like ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}{\text{, H}}_{\text{3}}{\text{PO}}_{\text{4}}{\text{, H}}_{\text{3}}{\text{PO}}_{\text{3}}$ etc. and oxides. The concentration and pH of polyprotic acid can be determined with the help of acid-base titration. The oxides of non-metals or main group elements are acidic in nature.

Interpretation Introduction

(c)

Interpretation:

The balanced equation for the reaction of solution of ${\text{H}}_{\text{3}}{\text{PO}}_{\text{4}}$ with $\text{Ca}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}$ and the mass of precipitate formed in grams needs to be determined.

Concept introduction:

The main group elements tend to form oxyacids which are usually polyprotic acids like ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}{\text{, H}}_{\text{3}}{\text{PO}}_{\text{4}}{\text{, H}}_{\text{3}}{\text{PO}}_{\text{3}}$ etc. and oxides. The concentration and pH of polyprotic acid can be determined with the help of acid-base titration. The oxides of non-metals or main group elements are acidic in nature.

Interpretation Introduction

(d)

Interpretation:

The balanced equation for the reaction of ${\text{HNO}}_{\text{3}}$ solution with an excess of Zn and the volume of gas collected at 742 mmHg pressure and 20°C needs to be determined.

Concept introduction:

The main group elements tend to form oxyacid which are usually polyprotic acids like ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}{\text{, H}}_{\text{3}}{\text{PO}}_{\text{4}}{\text{, H}}_{\text{3}}{\text{PO}}_{\text{3}}$ etc. and oxides. The concentration and pH of polyprotic acid can be determined with the help of acid-base titration. The oxides of non-metals or main group elements are acidic in nature.