Complete and Balance Chemistry equations for single replacement reactions?

Question

If no reaction should occur write no reaction.

Need help please!!

1. Calcium metal was placed in hydrochloric acid.

2. A gold ring was dropped into sulfuic acid.

3. A solutions of copper(II) sulfate was left in a galvanized (zinc-coated) bucket.

4. Copper metal was left in a solution of sodium chloride.

5. Aluminum metal was cleaned with a solution containg hydrochloric acid.

Answer 1

Ca02 (s) + 2HCl (l) ----> CaCl2(aq) + 2H20(l)
is the first one...

Gold doesn't react with Acid

Zinc will displace the Copper so, write the formula for Zinc Sulphate.

Copper won't displace the Sodium Chloride its less reactive

Aluminum metal

Al203(s) + 3HCl(l)----> Al2Cl3(aq)+ 3H20(l)....

hope that helps!

Answer 2

There are several mistakes in the previous answer.

1. Hydrogen gas is given off, and the calcium metal dissolves to form calcium chloride solution:

Ca + 2HCl ---> CaCl2 + H2

2. There is no reaction because gold is too unreactive.

3. The inside of the zinc bucket will become copper-plated (but the plating will probably fall off). The zinc coating will dissolve, because Zn is more reactive than Cu:

Zn + CuSO4 ---> ZnSO4 + Cu

4. There is no reaction, because Na is more reactive than Cu.

5. The aluminium will dissolve (eventually - it takes time to get going) and hydrogen gas is given off:

2Al + 6HCl ---> 2AlCl3 + 3H2

Answer 3

a million. stability each and every equation. become conscious of each and every as to type. a)Pb(NO3)2+K2CrO4--->PbCrO4+2KNO3 b)Cl2+2KI--->2KCl+I2 c)2C3H6+9O2--->6CO2+6H2O d)2Al(OH)3--->Al2O3+3H2O e)4Li+O2--->2Li2O f)6HCl+Fe2O3--->2FeCl3+3H2O g)MgCO3--->MgO+CO2 (its one to a minimum of one) h)Ba(CN)2+H2SO4--->BaSO4+2HCN 2. finished and stability an equation for each reaction a)CaI2+Hg(NO3)2---> No reaction b)2Al+Cl2---> 2AlCl c)Ag+HCl---> No reaction d)C2H2+O2---> (i dont understand this one sorrry) e)MgCl2---> Mg + Cl2 f)H2O2---> H2 + O2 I have not have been given any clue a thank you to do the final one the two. i forgot hah. desire i helped.