Write down the reaction equations according to the schemes, indicate their type according to the “number

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.