To complete the chemical equation for the decomposition reaction, let's break down the reaction step by step.
The decomposition reaction we are dealing with is:
[tex]\[ 2 \text{KI} \rightarrow 2 \square + \square_2 \][/tex]
1. Identify the reactants and products: The reactant is potassium iodide (KI). When it decomposes, it breaks down into its constituent elements.
2. Determine the products: Potassium iodide (KI) decomposes into potassium (K) and iodine (I₂).
3. Balance the products:
- We know each molecule of KI consists of one atom of potassium (K) and one atom of iodine (I).
- Since we start with 2 molecules of KI, we should end up with 2 atoms of potassium (K).
- Iodine (I) pairs up to form diatomic molecules (I₂). So, from 2 KI, we'd get one I₂ molecule.
Thus, when 2 moles of potassium iodide (KI) decompose, they produce 2 moles of potassium (K) and 1 mole of iodine (I₂).
Filling in the boxes:
[tex]\[ 2 \text{KI} \rightarrow 2 \text{K} + \text{I}_2 \][/tex]
So the correct chemical symbols to complete the equation are:
[tex]\[ 2 \text{KI} \rightarrow 2 \boxed{\text{K}} + \boxed{\text{I}_2} \][/tex]
