The purpose of this experiment is to study the effect of an oxidizing acid [concentrated sulphuric(VI) acid] and a non-oxidizing acid [ concentrated phosphoric(V) acid] on three solid potassium halides, namely potassium chloride, potassium bromide and pot

Authors Avatar

  1. Title

Reactions of solid halides

  1. Aim

The purpose of this experiment is to study the effect of an oxidizing acid [concentrated sulphuric(VI) acid] and a non-oxidizing acid [ concentrated phosphoric(V) acid] on three solid potassium halides, namely potassium chloride, potassium bromide and potassium iodide..

  1. Results & Calculations

Table 1

Table 2

Join now!

Table 3

  1. Discussion

Table 1: For chlorine, it can be prepared from the oxidation of chlorine by MnO2 and conc. HCl Heating will be required.

MnO2 + 4H+ + 2Cl- → Mn2+ + 2H2O + Cl2

           The Cl2 is purified by washing with water to remove HCl and then with conc. H2SO4, conc. H3PO4, or anhydrous CaCl2 to remove moisture.

       For bromine, it can be prepared by the action of MnO2 on KBr and conc. H2SO4. No heating is required because Br- is a stronger agent than Cl-. The Br2 is then dried with anhydrous CaCl2. The bromine liquid ...

This is a preview of the whole essay