Which of the following is a combination reaction and which is a displacement reaction?
$C l_{2} + 2 K I \to 2 K C l + I_{2}$
$2 K + C l_{2} \to 2 K C l$

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Solution

Step 1: Chemical reaction
The reaction between one or more substances (reactants) and it formed a new substance (products) is called a chemical reaction.
Step 2: Combination reaction and displacement reaction
The reaction is when two or more elements are combined to form a single compound and is called a combination reaction.
The reaction is when one atom of the reactant gets displaced by another atom of another reactant is called a displacement reaction.
Step 3: Name of the reaction
${Cl}_{2} (g) + 2 KI (s) \to 2 KCl (s) + I_{2} (g)$ - This reaction is called a displacement reaction because the Iodine atom in the potassium iodide is displaced by Chlorine and forms Potassium chloride.
$2 K (s) + {Cl}_{2} (g) \to 2 KCl (s)$ - This reaction is called a combination reaction because potassium and chloride are combined to form potassium chloride.

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Similar questions

{Cl}_{2} + 2 KI \underset{}{\to} 2 KCl + I_{2}

2 K + C l_{2} \underset{}{\to} 2 KCl

Which of the following is a combination and which is a displacement reaction ?

(a) $C l_{2} + 2 K I ⟶ 2 K C I + I_{2}$

(b) $2 K + C I_{2} ⟶ 2 K C I$

{Cl}_{2} + 2 KI \underset{}{\to} 2 KCl + I_{2}

2 K + C l_{2} \underset{}{\to} 2 KCl

2 K I + C l_{2} \to 2 K C l + I_{2}

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