Question

b. balance the equation for the reaction between potassium iodide and chlorine by adding coefficients.
ki + cl₂ → kcl + i₂
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Explanation:

Step1: Write the un - balanced equation

$KI+Cl_2
ightarrow KCl + I_2$

Step2: Balance iodine atoms

There are 2 iodine atoms on the right - hand side. So, we put a 2 in front of $KI$: $2KI+Cl_2
ightarrow KCl + I_2$

Step3: Balance potassium and chlorine atoms

Now, there are 2 potassium atoms on the left - hand side. So, we put a 2 in front of $KCl$: $2KI + Cl_2
ightarrow2KCl+I_2$

Answer:

$2KI + Cl_2
ightarrow2KCl+I_2$