Schemes of reactions are given. make an equation of chemical reactions and indicate their type. a) calcium oxide + carbon monoxide (4) – calcium carbonate. b) sulfuric acid + aluminum = aluminum sulfate + hydrogen. c) phosphoric acid + sodium hydroxide = sodium phosphate + water. d) nitric acid + water + nitric oxide (4) + oxygen.
We draw up the equations of chemical reactions and indicate their type.
a. Interaction of calcium oxide and carbon monoxide (4).
CaO + CO2 = CaCO3.
This reaction is called an addition reaction.
b. Interaction of aluminum and sulfuric acid.
2Al + 3H2SO4 = Al2 (SO4) 3 + 3H2.
This reaction is called a substitution reaction.
v. Reaction between sodium hydroxide and phosphoric acid.
3NaOH + H3PO4 = Na3PO4 + 6H2O.
This reaction is called an ion exchange reaction.
d. Decomposition of nitric acid.
4HNO3 = 4NO2 + O2 + 2H2O.
This reaction is called a decomposition reaction. Nitric acid decomposes in the light when heated.
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