Write down the reaction equations according to the schemes, indicate their type according to the “number and composition of starting substances and food” 1) Potassium nitrate – potassium nitrate + oxygen 2) Nitric oxide 5 + water – nitric acid 3) Sulfuric acid + iron hydroxide 3 -? +? 4) Molybdenum oxide 6 + calcium -? +?
(1) According to the number and composition of the starting materials, the reaction of obtaining potassium nitrite and oxygen from potassium nitrate is a decomposition reaction.
2KNO3 → 2KNO2 + O2 ↑.
2. The reaction of nitric oxide (V) with water is a compound reaction. The reaction product is nitric acid.
N2O5 + H2O = 2 HNO3.
3. The reaction of sulfuric acid and iron hydroxide is an exchange reaction. The reaction product is iron (III) sulfate and water.
H2SO4 + Fe (OH) 3 = Fe2 (SO4) 3 + H2O.
4. The reaction between molybdenum oxide and calcium is a substitution reaction.
MoO3 + 3Ca = 3CaO + Mo.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.