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Match the following chemical reactions to their reaction types:

1. [tex] \text{NaNO}_2 + \text{HCl} \longrightarrow \text{NaCl} + \text{HNO}_2 [/tex]
- A. Exchange (double replacement)

2. [tex] \text{Ba}\left(\text{ClO}_3\right)_2 \longrightarrow \text{BaCl}_2 + 3\text{O}_2 [/tex]
- B. Decomposition

3. [tex] \text{CaO} + \text{CO}_2 \longrightarrow \text{CaCO}_3 [/tex]
- C. Combination (synthesis)

4. [tex] \text{ZnSO}_4 + \text{Mg} \longrightarrow \text{Zn} + \text{MgSO}_4 [/tex]
- D. Displacement (single replacement)

Sagot :

GinnyAnswer
Sure, let’s analyze each of the given chemical reactions and identify the type of reaction. Here's the step-by-step solution:

1. Reaction:
[tex]\[ NaNO_2 + HCl \longrightarrow NaCl + HNO_2 \][/tex]
- Type of Reaction:
This reaction involves the exchange of ions between two compounds to form new compounds. This is known as an exchange (double replacement) reaction.

2. Reaction:
[tex]\[ Ba(ClO_3)_2 \longrightarrow BaCl_2 + 3 O_2 \][/tex]
- Type of Reaction:
This reaction involves the breakdown of a single compound into two or more simpler substances. This is known as a decomposition reaction.

3. Reaction:
[tex]\[ CaO + CO_2 \longrightarrow CaCO_3 \][/tex]
- Type of Reaction:
This reaction involves the combination of two or more substances to form a single compound. This is known as a combination (synthesis) reaction.

4. Reaction:
[tex]\[ ZnSO_4 + Mg \longrightarrow Zn + MgSO_4 \][/tex]
- Type of Reaction:
In this reaction, one element displaces another element in a compound. This is known as a displacement (single replacement) reaction.

To summarize:

- NaNO_2 + HCl \longrightarrow NaCl + HNO_2 is an exchange (double replacement) reaction.
- Ba(ClO_3)_2 \longrightarrow BaCl_2 + 3 O_2 is a decomposition reaction.
- CaO + CO_2 \longrightarrow CaCO_3 is a combination (synthesis) reaction.
- ZnSO_4 + Mg \longrightarrow Zn + MgSO_4 is a displacement (single replacement) reaction.

Therefore, the correct associations are:
- \(NaNO_2 + HCl \longrightarrow NaCl + HNO_2\) ⟶ exchange (double replacement).
- \(Ba(ClO_3)_2 \longrightarrow BaCl_2 + 3 O_2\) ⟶ decomposition.
- \(CaO + CO_2 \longrightarrow CaCO_3\) ⟶ combination (synthesis).
- [tex]\(ZnSO_4 + Mg \longrightarrow Zn + MgSO_4\)[/tex] ⟶ displacement (single replacement).
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