Chemistry, 17.12.2019 05:31 jillericamurph46

Write the balanced chemical equation for the following reaction. phases are optional. solid calcium chlorate decomposes to form solid calcium chloride and oxygen gas.

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The balanced chemical equation for the decomposition of calcium chlorate to form oxygen and calcium chloride is as follows:

Ca(ClO3)2 → CaCl2 + 3O2

DECOMPOSITION REACTION:

Decomposition reaction is a reaction that involves the breakdown of a single compound to form two or more elements/substances. Calcium chlorate has a chemical formula of Ca(ClO3)2. It undergoes decomposition to produce calcium chloride (CaCl2) and oxygen gas (O2). The reaction is as follows:Ca(ClO3)2 → CaCl2 + O2However, the equation is not balanced because the number of atoms of oxygen element is not the same on both sides of the equation. To balance the equation, we make use of coefficient 3 in front of the oxygen as follows:Ca(ClO3)2 → CaCl2 + 3O2

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Answer from: jachecj3269

Ca(ClO₃)₂ (s) → CaCl₂ (s) + 3O₂ (g)

Explanation:

1) Word equation (given)

calcium chlorate (solid) → solid calcium chloride (solid) + oxygen (gas)

2) Chemical formulae of the reactant and products:

Calcium chlorate:

The most common oxidation states of chlorine are -1, +1, +3, +5, +7.

The suffix ate in chlorate means that chlorine atom is with the third lowest oxidation state (counting only the positive states). So, this is +5.

The oxidation state of calcium is +2.

Hence, the chemical formula of calcium chlorate is Ca(ClO₃)₂

Calcium chloride

The suffix ide in chloride means that chlorine is with oxidation state -1. Again the oxidation state of calcium is +2.

Hence, the chemical formula of calcium chloride is CaCl₂

Oxygen

Oxygen gas is a diatomic molecule, so its chemical formula is O₂.

Phases

The symbols s and g (in parenthesis) indicate the solid and gas phases respectively.

3) Chemical equation:

Ca(ClO₃)₂ (s) → CaCl₂ (s) + O₂ (g)

That equation is not balanced becasue the number of O atoms in the reactant side and in the product side are different.

4) Balanced chemical equation:

Add a 3 as coefficient in front of O₂(g), in the product side to balance:

Ca(ClO₃)₂ (s) → CaCl₂ (s) + 3O₂ (g)

Verify that all the atoms are balanced:

Atom Reactant side Product side

Ca 1 1

Cl 2 2

O 3×2 = 6 2×3 = 6

Conclusion: the equation is balanced and the final answer is:

Ca(ClO₃)₂ (s) → CaCl₂ (s) + 3O₂ (g)

Answer from: Quest

the answer is definitely c.

Answer from: Quest

answer; natural resources;

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