Question

1. balance the equation for the reaction between potassium iodide and chlorine by adding coefficients. ? ki + ? cl₂ → ? kcl + ? i₂ submit answer 0 / ∞ submissions used score: 0/1

Explanation:

Step1: Balance Iodine atoms

On the left, we have 1 I in KI. On the right, we have 2 I in \(I_2\). So we need 2 KI to balance I.
\(2\ KI +?\ Cl_2
ightarrow?\ KCl +?\ I_2\)

Step2: Balance Potassium atoms

Now with 2 KI, we have 2 K on the left. So we need 2 KCl on the right to balance K.
\(2\ KI +?\ Cl_2
ightarrow 2\ KCl +?\ I_2\)

Step3: Balance Chlorine atoms

On the right, 2 KCl has 2 Cl. On the left, \(Cl_2\) has 2 Cl per molecule. So we need 1 \(Cl_2\).
\(2\ KI + 1\ Cl_2
ightarrow 2\ KCl + 1\ I_2\)

Answer:

2 KI + 1 Cl₂ → 2 KCl + 1 I₂ (So the coefficients are 2, 1, 2, 1 respectively for KI, Cl₂, KCl, I₂)