Question

Potassium permanganate (KMnO4) reacts with hydrochloric acid (HCl) to form potassium chloride (KCl), manganese chloride (MnCl2), water (H2O), and chlorine gas (Cl2). The balanced chemical equation is 2KMnO4 + 16HCl → 2KCl + 2MnCl2 + 8H2O + 5Cl2. Select the correct ratios of each of the following substances.

KMnO4:KCl =



HCl:H2O =



KMnO4:Cl2 =



HCl:MnCl2 =

Answer 1

2KMnO₄ + 16HCl = 2KCl + 2MnCl₂ + 8H₂O + 5Cl₂

KMnO₄:Ксl = 2:2 = 1:1
Нсl:H₂O = 16:8 = 2:1
KMnO₄:Cl₂ = 2:5
Нсl:MnCl₂ = 16:2 = 8:1

Answer 2

Molar ratio is the ration of two chemical species in which they react in a reaction. The  molar ratio of  $\bold{ KMnO_4:KCl }$ , $\bold{ HCl:H_2O }$, $\bold{ KMnO_4:Cl_2}$, and $\bold{ HCl:MnCl_2}$ is 1:8, 2:1, 2:5, and 8:1 respectively.

Molar Ratio:

It is the ration of two chemical species in which they react in a reaction. In the given reaction,

$\bold{ 2KMnO_4 + 16HCl \rightarrow 2KCl + 2MnCl_2 + 8H_2O + 5Cl_2}$

2 moles of Potassium permagnate reacts  16 moles with hydrochloric acid to form 2 mole KCl, 2 mole Magnesium chloride, 8 moles water and 5 mole of Chlorine gas.

So, molar ratio between $\bold{ KMnO_4:KCl }$ = 2: 16 = 1:8

Molar ratio between $\bold{ HCl:H_2O }$ = 16:8 =  2:1

Molar ratio between $\bold{ KMnO_4:Cl_2 = 2:5}$

Molar ratio between $\bold{ HCl:MnCl_2= 16:2 = 8:1}$

Hence, we can conclude that molar ratio of  $\bold{ KMnO_4:KCl }$ , $\bold{ HCl:H_2O }$, $\bold{ KMnO_4:Cl_2}$, and $\bold{ HCl:MnCl_2}$ is 1:8, 2:1, 2:5, and 8:1 respectively.

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