Write net equations for each of the combinations of reactants below. Use appropriate ionic and molec — Descriptive Chemistry Chemistry Question
Problem Context
Write net equations for each of the combinations of reactants below. Use appropriate ionic and molecular formulas and omit formulas for all ions or molecules that do not take part in a reaction. Write structural formulas for all organic substances. You need not balance the equations. All reactions occur in aqueous solution unless otherwise indicated.
Concentrated nitric acid is added to iron(II) sulfide.
Model Answer
H+ + NO3– + FeS → NO + Fe3+ + S + H2O
Acetic acid is added to solid calcium phosphate.
Model Answer
HC2H3O2 + Ca3(PO4)2 → Ca2+ + C2H3O2– + HPO42–
Small pieces of aluminum metal are added to concentrated sodium hydroxide solution.
Model Answer
Al + H2O + OH– → Al(OH)4– + H2
Solutions of chromium(III) sulfate and barium hydroxide are mixed.
Model Answer
Cr3+ + SO42– + Ba2+ + OH– → Cr(OH)3 + BaSO4
Concentrated hydrochloric acid is added to an aqueous solution of cobalt(II) nitrate.
Model Answer
Co2+ + Cl– → CoCl42–
Bromine gas is added to propene.
Model Answer
Br2 + CH3CHCH2 → CH3CHBrCH2Br