Question

Types of chemical reactionsPlease tell me what kind of chemical reactions are the following:
Cu (s) + 4HNO3 (aq) → Cu(NO3)2 (aq) +NO2 (g) +H2O (l)
Cu(NO3)2 (aq) +2NaOH (aq) → Cu(OH)2 (s) + 2NaNO3 (aq)
HNO3 (aq) + NaOH (aq) → H2O (l) + NaNO3 (aq)
Cu(OH)2 (s) + heat → CuO (s) + H2O (l)
CuO (s) + H2SO4 (aq) → CuSO4 (aq) + H2O (l)
CuSO4 (aq) +Zn (s) → Cu (s) + ZnSO4 (aq)

Accepted Answer

The first is primarily an oxidation/reduction reaction.  The copper goes from a charge of zero to a charge of +2 and was oxidized. The nitrogen goes from +5 to +4 and was reduced.
The second is a double replacement reaction.
The third is an acid/base neutralization reaction which is a type of double replacement reaction.
The fourth is a decomposition reaction.
The 5th is again an acid/base neutralization reaction which is a type of double replacement reaction.
The 6th is a single replacement reaction.

Answer

The following chemical reactions are:
1. Substitution reaction. Also can be looked at as a reduction reaction.
2. Double replacement reaction (or Metathesis)
3. Acid-Base neutralization reaction (type of double replacement reaction)
4. Chemical decomposition reaction
5. Again, another Acid-Base neutralization reaction (similar to 3)
6. Single replacement reaction (or Substitution reaction)
Hope this helps!

Answer

The reactions you have mentioned are of the following type:
 
Cu(s) + 4HNO3 (aq) → Cu(NO3)2 (aq) +NO2 (g) +H2O(l) Combination of Single Displacement or Substitution Reaction and Chemical Decomposition or Analysis Reaction
Cu(NO3)2 (aq) +2NaOH (aq) → Cu(OH)2 (s) + 2NaNO3 (aq) Metathesis or Double Displacement Reaction
 HNO3 (aq) + NaOH (aq) → H2O (l) + NaNO3 (aq) Acid-Base Reaction
Cu(OH)2(s) + heat → CuO (s) + H2O (l) Chemical Decomposition or Analysis Reaction
CuO (s) + H2SO4 (aq) → CuSO4 (aq) + H2O (l) Metathesis or Double Displacement Reaction
CuSO4 (aq) +Zn (s) → Cu (s) + ZnSO4 (aq) Single Displacement or Substitution Reaction

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