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The reaction between potassium superoxide, KO₂, and CO₂,
[tex]4KO_2+2CO_2 \rightarrow 2K_2CO_3+3O_2[/tex]
is used as a source of O₂ and absorber of CO₂ in self-contained breathing equipment used by rescue workers.
How many moles of O₂ are produced when 0.300 mol of KO₂ reacts in this fashion?

Respuesta :

Edufirst

Answer:

  • 0.225 mol O₂

Explanation:

1. Balanced chemcical reaction (given):

  • 4KO₂ + 2CO₂ → 2K₂CO₃ + 3O₂

2. Mole ratio

Use the coefficients from the balanced chemical equation to form the mole ratio of O₂ to KO₂:

         [tex]\dfrac{3molO_2}{4molKO_2}[/tex]

3. How many moles of O₂ are produced when 0.300 mol of KO₂ reacts in this fashion?

Mutiply 0.300 mol of KO₂ by the mole ratio:

         [tex]0.300molKO_2\times 3molO_2/4molKO_2=0.225 molO_2[/tex]

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