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zimovet [89]
2 years ago
9

(THIS QUESTION IS FROM APEX IN COURSE: Physical Science Sem 2

Chemistry
2 answers:
Tatiana [17]2 years ago
6 0

<u>Answer:</u> The correct answer is Option A and Option B.

<u>Explanation:</u>

Double displacement reaction is defined as the chemical reaction in which exchange of ions takes place.

The general equation for this reaction follows:

AB+CD\rightarrow CB+AD

For the given options:

<u>Option A:</u>  HC_2H_3O_2(aq.)+NaHCO_3(aq.)\rightarrow NaC_2H_3O_2(aq.)+H_2CO_3(aq.)

This is considered as a double displacement reaction.

<u>Option B:</u>  NaOH(aq.)+HCl(aq.)\rightarrow NaCl(aq.)+HOH(l)

This is considered as a double displacement reaction.

<u>Option C:</u>  Zn(s)+HCl(aq.)\rightarrow ZnCl_2(aq.)+H_2(g)

This is considered as a single displacement reaction because more reactive metal (zinc) is displacing a less reactive metal (hydrogen).

<u>Option D:</u>  2Cu(s)+O_2(g)\rightarrow 2CuO(s)

This is considered as a synthesis reaction because copper and oxygen are combining in their elemental state to produce a single compound.

Hence, the correct answer is Option A and Option B.

mina [271]2 years ago
4 0

The following double-displacement reactions are fully applied/answered:

A. HC2H3O2(aq) + NaHCO3(aq) → NaC2H3O2(aq) + H2CO3(aq)

B. NaOH(aq) + HCI(aq) → NaCI(aq) + HOH(I)

<em>(The answers are</em> A. & B.<em>)</em>

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