Which clue can be used to identify a chemical reaction as a replacement reaction?

The reaction has two reactants with ions that seem to switch places.
The reaction has a single reactant that changes into two or more products.
The reaction involves oxygen reacting with a hydrocarbon and giving off heat.
The reaction involves a single product forming from two or more reactants.

Question

22-09-2017
Physics

contestada

Which clue can be used to identify a chemical reaction as a replacement reaction?

The reaction has two reactants with ions that seem to switch places.
The reaction has a single reactant that changes into two or more products.
The reaction involves oxygen reacting with a hydrocarbon and giving off heat.
The reaction involves a single product forming from two or more reactants.

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I need the answer of ques.17

LordAnime LordAnime · Answer 1 · 2017-09-22T17:53:45+02:00

LordAnime LordAnime

22-09-2017

"The reaction has two reactants with ions that seem to switch places" can be used to identify a chemical reaction as a replacement reaction.

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OlaMacgregor OlaMacgregor · Answer 2 · 2019-10-15T11:26:48+02:00

Answer: Option (a) is the correct answer.

Explanation:

When only one element gets displaced upon chemical reaction between a compound and an element then it is known as a single replacement reaction.

For example, [tex]Fe_{2}O_{3}(s) + 2Al(s) \rightarrow Al_{2}O_{3}(s) + 2Fe(l)[/tex]

On the other hand, when two compounds chemically react together and their ions get replaced by each other then it is known as a double replacement reaction.

For example, [tex]AgNO_{3}(aq) + NaCl(aq) \rightarrow AgCl(s) + NaNO_{3}(aq)[/tex]

Thus, we can conclude that the reaction which has two reactants with ions that seem to switch places clue can be used to identify a chemical reaction as a replacement reaction.