Classify the following reactions as precipitation reactions, oxidation-reduction reactions, or acid-base reactions.
1)2NaCl(aq)+K2H2Sb2O7(aq)==Na2H2SbO7(s)+2KCl(aq)
2)(CH3COO)2Cu(aq)+(NH4)2C2O4(aq)==CuC2O4(s)+2CH3COONH4(aq)
3)4Al(s)+3O2(g)==2Al2O3(s)
4)2Zn(s)+O2(g)==2ZnO(s)
5)Zn(s)+Cu^2+((aq)==Zn^2+(aq)+Cu(S)
6)Mg(OH)2(aq)+2HCl(aq)==2H2O(l)+MgCl2(aq)
7)3NaOH(aq)+H3PO4(aq)==Na3PO4(aq)+3H2O(l)
Precipitation: #'s 1,2
Oxidation-reduction: #'s 3,4,5
Acid-based: #'s 6,7
**similar to the ones on mastering chem, or at least that's how I answered them. And hey we all need a little help, even if its 3 years later. I hope this helps someone else who needs a lil break
1) Precipitation reaction (formation of a solid precipitate)
2) Precipitation reaction (formation of a solid precipitate)
3) Oxidation-reduction reaction (combustion of aluminum)
4) Oxidation-reduction reaction (formation of zinc oxide)
5) Oxidation-reduction reaction (replacement reaction)
6) Acid-base reaction
7) Acid-base reaction
To classify the reactions as precipitation reactions, oxidation-reduction reactions, or acid-base reactions, we need to analyze the reactions and identify the key characteristics of each type of reaction.
1) 2NaCl(aq) + K2H2Sb2O7(aq) -> Na2H2SbO7(s) + 2KCl(aq)
This reaction involves the exchange of ions between the two aqueous solutions. Since a solid compound (Na2H2SbO7) is formed, this is a precipitation reaction.
2) (CH3COO)2Cu(aq) + (NH4)2C2O4(aq) -> CuC2O4(s) + 2CH3COONH4(aq)
This reaction also involves the exchange of ions between the two aqueous solutions. A solid compound (CuC2O4) is formed, so this is also a precipitation reaction.
3) 4Al(s) + 3O2(g) -> 2Al2O3(s)
This is a synthesis reaction, where two elements (Al and O2) combine to form a compound (Al2O3). This type of reaction is not specifically categorized as precipitation, oxidation-reduction, or acid-base.
4) 2Zn(s) + O2(g) -> 2ZnO(s)
Similar to the previous reaction, this is a synthesis reaction where two elements (Zn and O2) combine to form a compound (ZnO). This type of reaction is not specifically categorized as precipitation, oxidation-reduction, or acid-base.
5) Zn(s) + Cu^2+(aq) -> Zn^2+(aq) + Cu(s)
This reaction involves the transfer of electrons between Zn and Cu^2+. Zinc (Zn) loses electrons and is oxidized to Zn^2+, while copper ion (Cu^2+) gains electrons and is reduced to Cu. This is an oxidation-reduction reaction or a redox reaction.
6) Mg(OH)2(aq) + 2HCl(aq) -> 2H2O(l) + MgCl2(aq)
This reaction involves the exchange of ions between the two aqueous solutions. Since water (H2O) is formed and no solid compound is produced, this is an acid-base reaction.
7) 3NaOH(aq) + H3PO4(aq) -> Na3PO4(aq) + 3H2O(l)
Similar to the previous reaction, this is an acid-base reaction. The hydroxide ions (OH-) from NaOH react with the hydrogen ions (H+) from H3PO4 to form water molecules (H2O). The sodium phosphate (Na3PO4) is a salt formed in this reaction.
In summary:
1) Precipitation reaction
2) Precipitation reaction
3) Not categorized as a specific type
4) Not categorized as a specific type
5) Oxidation-reduction reaction
6) Acid-base reaction
7) Acid-base reaction
You need to do these yourself. What do you not understand about this question?
Aqueous solutions that end up with solids usually are pptn reactions. Loss/gain electrons in a reaction are redox reactions. Those that produce water, especially if they are from OH and H containing compounds, usually are acid/base reactions.