Write complete balanced chemical equations for the following reactions. Include states of matter
1. A solution of potassium carbonate reacts with hydrobromic acid.
2. Potassium sulfite powder reacts with sulfuric acid. (Think!)
3. Elemental iron reacts with hydrochloric acid (assume iron(III) is formed).
You add the states of matter.
1. A solution of potassium carbonate reacts with hydrobromic acid.
K2CO3 + 2HBr ==> CO2 + H2O + 2KBr
2. Potassium sulfite powder reacts with sulfuric acid. (Think!)
K2SO3 + H2SO4 ==> K2SO4 + H2SO3 but H2SO3 is a weak acid and will decompose to SO2 and H2O. Full equation is
K2SO3 + H2SO4 ==> K2SO4 + SO2 + H2O
3. Elemental iron reacts with hydrochloric acid (assume iron(III) is formed).
2Fe(s) + 6HCl(aq) ==> 2FeCl3(aq) + 3H2(g)
To write balanced chemical equations for these reactions, we need to identify the reactants and products involved. Let's go through each reaction one by one:
1. A solution of potassium carbonate reacts with hydrobromic acid.
First, let's determine the chemical formulas of the reactants. Potassium carbonate is K2CO3, and hydrobromic acid is HBr.
The balanced chemical equation can be written as:
K2CO3(aq) + 2HBr(aq) → 2KBr(aq) + H2O(l) + CO2(g)
2. Potassium sulfite powder reacts with sulfuric acid.
For this reaction, we need to determine the chemical formulas of potassium sulfite and sulfuric acid. Potassium sulfite is K2SO3, and sulfuric acid is H2SO4.
The balanced chemical equation can be written as:
K2SO3(s) + H2SO4(aq) → K2SO4(aq) + H2O(l) + SO2(g)
3. Elemental iron reacts with hydrochloric acid (assume iron(III) is formed).
In this reaction, we have elemental iron reacting with hydrochloric acid. The balanced chemical equation can be written as:
Fe(s) + 3HCl(aq) → FeCl3(aq) + H2(g)
Note: Iron(III) chloride, FeCl3, is formed in this reaction.
Remember to balance the equations by ensuring that the number of atoms of each element is the same on both sides of the equation.