Could you please tell me if these are right? Write an equation for the following reactions. Write the correct formulas of the reactants and products. Then correctly balance each equation.
A.) Potassium and oxygen gas react to form potassium oxide.
I got K+O2=KO2
B.) Sodium and water react to form sodium hydroxide and hydrogen gas.
I got Na+H2O=NaOH+H2
2Na(s)+2H2O(l) = 2NaOH(aq)+H2(g)
C.) Iron and oxygen gas react to form iron (III) oxide.
I got 4Fe+3O2=2Fe2O3
B and C are correct. A is not correct for the way the question is worded.
K + O2 ==> K2O
2K + O2 ==> K2O
A.) Potassium and oxygen gas react to form potassium oxide. The correct formula for potassium is K, and for oxygen gas is O2. Therefore, the balanced equation is:
4K + O2 → 2K2O
B.) Sodium and water react to form sodium hydroxide and hydrogen gas. The correct formula for sodium is Na, for water is H2O, for sodium hydroxide is NaOH, and for hydrogen gas is H2. Therefore, the balanced equation is:
2Na + 2H2O → 2NaOH + H2
C.) Iron and oxygen gas react to form iron (III) oxide. The correct formula for iron is Fe, for oxygen gas is O2, and for iron (III) oxide is Fe2O3. Therefore, the balanced equation is:
4Fe + 3O2 → 2Fe2O3
Your answers for equations A, B, and C are incorrect. To correctly balance chemical equations, you need to ensure that the number of atoms of each element is the same on both sides of the equation. Here's how to correctly balance each equation:
A.) Potassium and oxygen gas react to form potassium oxide. The correct formula for potassium is K, for oxygen gas is O2, and for potassium oxide is K2O.
So the balanced equation is:
4K + O2 → 2K2O
B.) Sodium and water react to form sodium hydroxide and hydrogen gas. The correct formula for sodium is Na, for water is H2O, for sodium hydroxide is NaOH, and for hydrogen gas is H2.
So the balanced equation is:
2Na + 2H2O → 2NaOH + H2
C.) Iron and oxygen gas react to form iron (III) oxide. The correct formula for iron is Fe, for oxygen gas is O2, and for iron (III) oxide is Fe2O3.
So the balanced equation is:
4Fe + 3O2 → 2Fe2O3