Balance each of the following, write as a chemical equation and identify all of

Question

Balance each of the following, write as a chemical equation and identify all of the phases.

A.) Solid potassium chlorate is heated to form solid potassium chloride and oxygen gas.

B.) Sulfur dioxide gas and oxygen gas combine to form sulfur trioxide gas.

C.) Propane gas, C3H6, reacts with bromine gas, Br2, to form dibromopropane, C3H6Br2.

D.) Aluminum metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is produced with the formation of aluminum chloride, AlCl3 solution.

Please explain and show the steps needed for each of these to identify the correct reactants and products and how to balance the equations. Also please explain the phases of each, in the final balanced equation.

Explanation / Answer

1. the reaction is KClO3----> KCl +O2

there are 2 atoms of oxygen on Products and one on the reactants.

Hence balancing them will be done by addiing 2 on reactants side and 3 on the products side,. The balanced equation

2KClO3 (s)----> 2KCl(s) +3O2 (g)

2. SO2 (g)+1/2O2 (g)----- > SO3 (g)

3. C3H6 (g) +Br2 (g)---> C3H6Br2(g)

4. 2Al(s) +6HCl- (aq)--> 2AlCl3 (aq)+ 3H2

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