Review the equation below. 2KClO3 2KCl + 3O2 How many moles of oxygen are produced when 2 mol of potassium chlorate (KClO3) decompose? 1 2 3 6

Respuesta :

Answer:

             3 mol of O

Solution:

The Balance chemical equation is as follow,

                                2 KClO₃    →    2 KCl  +  3 O₂

According to this equation on decomposition 2 moles of Potassium chlorate (KClO₃) produces 2 moles of Poatassium chloride (KCl) and 3 moles of oxygen gas (O₂).

Therefore, when,

                     2 moles of KClO₃ produces  =  3 moles of O₂

So,

                  2 moles of KClO₃ will produce  =  X moles of O₂

Solving for X,

                     X =  (2 mol × 3 mol) ÷ 2 mol

                    X  =  3 mol of O

Using above method you can calculate any amount of O₂ or KCl produced by decomposing any amount of KClO₃.

The reaction in which the reactants splits or break to produce two or more products is called the decomposition reaction.

3 moles of oxygen will be produced.

How to calculate the number of moles?

The balanced reaction can be shown as:

[tex]\rm 2 KClO_{3} \rightarrow 2 KCl + 3 O_{2}[/tex]

According to the reaction, 2 moles of Potassium chlorate [tex]\rm (KClO_{3})[/tex] decomposes to form:

  • Potassium chloride [tex]\rm (KCl)[/tex] = 2 moles
  • Oxygen gas [tex]\rm (O_{2})[/tex] = 3 moles

So when 2 moles of [tex]\rm KClO_{3}[/tex] produces = 3 moles of [tex]\rm O_{2}[/tex]

Then,

2 moles of [tex]\rm KClO_{3}[/tex] will produce = X moles of [tex]\rm O_{2}[/tex]

[tex]\begin{aligned}\rm X &= \dfrac{2 \;\rm mol \times 3 \;\rm mol }{ 2 \;\rm mol}\\\\&= 3 \;\rm mol\end{aligned}[/tex]

Therefore, option C is correct.

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