1. Write and balance the chemical equation when aluminum reactswith the oxygen i
ID: 682722 • Letter: 1
Question
1. Write and balance the chemical equation when aluminum reactswith the oxygen in the air to generate alminum oxide.2. Write and balance the chemical equation when hydrogenreacts with the oxygen in the air to fenerate water.
3. Write and balance the chemical equation when magnesiumreplaces the hydrogen in an aqueous solution of hydrogen chlorideto form magnesium chloride and hydrogen gas.
4. Write and balance the chemical equation when an aqueoussolution of barium chloride reacts with an aqueous soultion ofpotassium sulfate to produce barium sulfate, which does notdissolve in water, and potassium chloride, which remains insolution.
2. Write and balance the chemical equation when hydrogenreacts with the oxygen in the air to fenerate water.
3. Write and balance the chemical equation when magnesiumreplaces the hydrogen in an aqueous solution of hydrogen chlorideto form magnesium chloride and hydrogen gas.
4. Write and balance the chemical equation when an aqueoussolution of barium chloride reacts with an aqueous soultion ofpotassium sulfate to produce barium sulfate, which does notdissolve in water, and potassium chloride, which remains insolution.
Explanation / Answer
Okay in order to write out these reactions you need to know how towrite your reactants and products. 1) Al + O2 --> Al2O3(Remember to use the oxidation numbers here Al is 3+ and O is -2,so you need 2 Al and 3 O to counter each other's charges. Now weneed to balance the equation. 4Al +3O2 --> 2Al2O3 2) H2 + O2 ---> H2O Now we needto balance so we get 2H2 + O2 --->2H2O 3) HCl (aq) + Mg (s) ---> MgCl2 (aq) + H2(g) Now we need to balance. 2HCl (aq) + Mg (s) ---> MgCl2 (aq) + H2(g) 4)BaCl2 (aq) + K2SO4(aq)--->BaSO4(s) + KCl (aq) Now we balance. BaCl2 (aq) + K2SO4(aq)--->BaSO4(s) + 2KCl (aq) Hope this helps!
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