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marin [14]
3 years ago
12

Which of the following is the correct ( unbalanced) equation for the reaction that takes place when solid phosphorus combines wi

th oxygen gas to form diphosphorus pentoxide?
A. P(s) + O2(g) --> P2O5(s)

B. P2O5(s) --> P2(s) + O2(g)

C. P(s) + O(g) --> P5O2(g)

D. P(s) + O2(g) --> PO2(g)
Chemistry
1 answer:
MA_775_DIABLO [31]3 years ago
8 0

Answer: option A

P(s) + O2(g) --> P2O5(s)

Explanation:

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The balanced chemical equation for the reaction is

2Ca(s) + O₂(g) → 2CaO(s)

and

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From the question,

We are to write a balanced chemical equation for the reaction between Calcium metal and oxygen gas

The balanced chemical equation for the reaction is

2Ca(s) + O₂(g) → 2CaO(s)

This is the balanced chemical equation for the reaction

To determine whether the reaction meets the requirements to be considered a redox reaction,

We will define the term <em>redox reaction</em>

<em></em>

A <em>redox reaction</em>, also called oxidation-reduction reaction, is any chemical reaction in which the oxidation number of a participating chemical species changes.

From the balanced equation above we can observe that the oxidation number of the participating species(Calcium and oxygen) changed.

The oxidation number of Calcium changed from 0 to +2

and

The oxidation number of Oxygen changed from 0 to -2

∴ The process meets the requirements to be considered a redox reaction.

Hence, the balanced chemical equation for the reaction is

2Ca(s) + O₂(g) → 2CaO(s)

and

The process meets the requirements to be considered a redox reaction.

Learn more here: brainly.com/question/17716543

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