Question

balance by Ionic oxidation method the redox reaction.cr(OH)₂ +3H^+=Cr3+ + 3H20​

Answer 1

Answer:

Step 1. Write down the unbalanced equation ('skeleton equation') of the chemical reaction. All reactants and products must be known. For a better result write the reaction in ionic form.

Cr(OH)3 + ClO3- → CrO42- + Cl-

Step 2. Separate the redox reaction into half-reactions. A redox reaction is nothing but both oxidation and reduction reactions taking place simultaneously.

a) Assign oxidation numbers for each atom in the equation. Oxidation number (also called oxidation state) is a measure of the degree of oxidation of an atom in a substance (see: Rules for assigning oxidation numbers).

Cr+3(O-2H+1)3 + Cl+5O-23- → Cr+6O-242- + Cl-1-