Chemical Equations Balancing

Write the chemical equation for the reaction between sodium and chlorine gas.

• NaCl + 2Na -> Cl2

• Na + Cl -> NaCl

• 2NaCl -> 2Na + Cl2

• 2Na + Cl2 -> 2NaCl

Balance the chemical equation: H2 + O2 → H2O

• H2O2 → H2O

• H2 + O2 → HO

• H2 + O2 → H2O2

• H2 + O2 → H2O

What is the chemical equation for the reaction between sulfuric acid and sodium hydroxide?

• H2SO4 + 2NaOH → Na2SO4 + H2O2

• H2SO4 + 2NaOH → Na2SO3 + 2H2O

• H2SO4 + 2NaOH → Na2SO4 + 2H2O

• H2SO4 + NaOH → Na2SO4 + H2O

Balance the chemical equation: Fe + O2 → Fe2O3

• Fe + 2O2 → Fe2O3

• 4Fe + 3O2 → 2Fe2O3

• 4Fe + 2O2 → 2Fe2O3

• 3Fe + 3O2 → 2Fe2O3

Write the chemical equation for the reaction between hydrochloric acid and sodium hydroxide.

• NaCl + H2O -> HCl + NaOH

• HCl + NaOH -> NaCl + H2O

• HCl + NaOH -> H2O + NaCl

• H2O + NaCl -> NaOH + HCl

Balance the chemical equation: N2 + H2 → NH3

• N2 + 4H2 → 3NH3

• N2 + H2 → N2H2

• N2 + 2H2 → NH3

• N2 + 3H2 → 2NH3

What is the chemical equation for the reaction between calcium oxide and water?

• CaO + H2O -> Ca(OH)2

• CaO + H2O -> Ca(OH)3

• CaO + H2O -> Ca2OH

• CaO + H2O -> CaOH

Balance the chemical equation: C3H8 + O2 → CO2 + H2O

• C3H8 + 4O2 → 3CO2 + 4H2O

• C3H8 + 5O2 → 3CO2 + 4H2O

• C3H8 + 6O2 → 3CO2 + 4H2O

• C3H8 + O2 → 2CO2 + 2H2O

Write the chemical equation for the reaction between nitric acid and potassium hydroxide.

• H2O + KNO3 → HNO3 + KOH

• H2O + HNO3 → KOH + KNO3

• KOH + HNO3 → KNO3 + H2O

• HNO3 + KOH → H2O + KNO3

Balance the chemical equation: Al + O2 → Al2O3

• Al + 3O2 → 2Al2O3

• Al + O2 → AlO2

• Al + O2 → AlO3

• Al + O2 → Al3O2