Classify each of the following as a redox reaction or a non-redox reaction.

Zn+CuCl2 -> ZnCl2+Cu
HCl+NaOH -> H2O+NaCl
2CO+O2 -> 2CO2
SO3+H2O -> H2SO4

A trick is to just look for the element in the equation that is paired on one side, but not on the other. This being said, the following answers are correct.

Redox:
2CO+O2 = 2CO2
Zn+CuCl2 = ZnCl2+Cu
Non-Redox:
SO3+H2O = H2SO4
HCl+NaOH = H2O +NaCl

NO SE

Alright, let's break it down:

1. Zn + CuCl2 -> ZnCl2 + Cu: This is a redox reaction because the zinc (Zn) is oxidized to Zn2+ ions, and the copper (Cu2+) in the copper chloride (CuCl2) is reduced to neutral copper (Cu).

2. HCl + NaOH -> H2O + NaCl: This is a non-redox reaction because there are no changes in oxidation numbers. It's simply an acid-base reaction where hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH) to form water (H2O) and sodium chloride (NaCl).

3. 2CO + O2 -> 2CO2: This is a redox reaction because the carbon monoxide (CO) is oxidized to carbon dioxide (CO2) by gaining oxygen (O2) molecules.

4. SO3 + H2O -> H2SO4: This is also a redox reaction. The sulfur trioxide (SO3) is reacting with water (H2O) to form sulfuric acid (H2SO4), with the sulfur going from an oxidation state of +6 in SO3 to +6 in H2SO4.

So, summarizing:
1. Redox reaction
2. Non-redox reaction
3. Redox reaction
4. Redox reaction

To determine whether each of the given reactions is a redox reaction or a non-redox reaction, we need to look at the oxidation state of the atoms involved.

In a redox reaction, there is a transfer of electrons between the reactants, resulting in a change in the oxidation state of at least one of the elements. On the other hand, in a non-redox reaction, there is no transfer of electrons, and the oxidation states of the atoms remain the same.

Let's analyze each reaction:

1. Zn + CuCl2 -> ZnCl2 + Cu
In this reaction, zinc (Zn) loses two electrons to form Zn2+ ions, while copper (Cu2+) gains two electrons to form metallic copper (Cu). Therefore, there is a transfer of electrons, indicating a change in oxidation states. Hence, this reaction is a Redox reaction.

2. HCl + NaOH -> H2O + NaCl
In this reaction, hydrogen (H) in HCl has an oxidation state of +1, and it remains the same in H2O. Similarly, sodium (Na) in NaOH has an oxidation state of +1, and it also remains the same in NaCl. There is no change in the oxidation states of any elements involved. Therefore, this reaction is a Non-redox reaction.

3. 2CO + O2 -> 2CO2
In this reaction, carbon (C) in CO has an oxidation state of +2, and it remains the same in CO2. Oxygen (O) in O2 has an oxidation state of 0, and it also remains the same in CO2. Again, there is no change in the oxidation states of the elements. Therefore, this reaction is also a Non-redox reaction.

4. SO3 + H2O -> H2SO4
In this reaction, sulfur (S) in SO3 has an oxidation state of +6, and it decreases to +4 in H2SO4. Oxygen (O) in H2O has an oxidation state of -2, and it increases to +6 in H2SO4. There is a clear change in the oxidation states of sulfur and oxygen, indicating a transfer of electrons. Hence, this reaction is a Redox reaction.

In summary:
- Redox reactions: Zn + CuCl2 -> ZnCl2 + Cu, SO3 + H2O -> H2SO4
- Non-redox reactions: HCl + NaOH -> H2O + NaCl, 2CO + O2 -> 2CO2

Here is a site that will show you how to assign oxidation numbers to each element. Do that with each equation. Redox equations will have some that change oxidation state; non-redox will not.

For example, the first one is a redox equation. Zn changes from zero on the left to +2 on the right. Cu changes from +2 on the left to zero on the right.
http://www.chemteam.info/Redox/Redox-Rules.html

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