Chapter 21, Problem 21.105SP

Interpretation Introduction

Interpretation:

Balanced equation for the preparation of $Ge{S}_2$ from $Ge{(OC{H}_{2}C{H}_3)}_4$ and $H_{2}S$ by sol-gel method has to be written.

Concept introduction:

Sol-gel method: Metal alkoxide, (obtained from metal and alcohol) undergoes hydrolysis and yields metal hydroxide. These metal hydroxides are known as sol and they are fine particle. Further, metal hydroxides combined together to form oxygen bridges by eliminating water. Sol linked together through a three dimensional network of oxygen bridges in which is sol is converted to a material known as gel. By heating water and solvents are removed to get metal oxide.

Balanced reaction is a chemical reaction in which number of atoms for each element in the reaction and the total charge are same on both reactant side and the product side.

Steps in balancing the information

• Step 1: Write the unbalanced equation
• Step 2: Find the coeffienct to balance the equation.
• The coeffienct should be reduced to the smallest whole number