Solid potassium chlorate (kclo3) decomposes into potassium chloride and oxygen gas when heated. how many moles of oxygen form when 54.3 g completely decomposes?

Explanation:

1. Molecular chemical equation:

2. Mole ratios:

3. Number of moles of KClO₃

3. Number of moles of O₂

As per the theoretical mole ratio 2 mol of KClO₃ produce 3 mol of O₂, then set up a proportion to determine how many  moles of O₂ will be produced from 0.44038 mol of KClO₃.

Round to 3 significant figures: 0.665 mol of O₂ ← answer

0.6645 moles of oxygen O₂  form when 54.3 g solid potassium chlorate KClO₃ completely decomposes

Stoichiometry in Chemistry learn about chemicals mainly emphasizes quantitative, such as the calculation of volume, mass, number, which is related to numbers, molecules, elements, etc.

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

In the reaction there are also manifestations of reagent substances namely gas (g), liquid (liquid / l), solid (solid / s) and solution (aqueous / aq).

Reactions that occur:

2KClO₃ ⇒ 2KCl + 3O₂

We determine the KClO₃ mole to determine the O₂ mole

M KClO₃ = 1. K + 1. Cl + 3. O

M KClO₃ = 1. 39 + 1. 35.5 + 3. 16

M KClO₃ = 39 + 35.5 + 48

M KClO₃ = 122.5

From the reaction equation, the mole ratio

KClO₃ : O₂  = 2 : 3

then :

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Keywords: mole, oxygen, potassium chlorate, decomposes,potassium chloride

they are made of gases.

they have a spherical shape.

they make energy through fusion.