[12%] Write net equations for each of the reactions below. Use appropriate ionic and molecular formu — Descriptive Chemistry / Reactions Chemistry Question
Problem Context
[12%] Write net equations for each of the reactions 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.
A solution of acetic acid (ethanoic acid) is added to solid cadmium hydroxide.
Model Answer
CH3COOH(aq) + Cd(OH)2(s) → Cd2+(aq) + CH3COO–(aq) + H2O(l)
Phosphorus tribromide and water are mixed.
Model Answer
PBr3(l) + H2O(l) → H3PO3(aq) + H3O+(aq) + Br–(aq)
Hydrogen sulfide gas is passed into a solution of nickel(II) perchlorate.
Model Answer
Ni2+(aq) + H2S(aq) → NiS(s) + H+(aq)
A mixture of manganese(IV) oxide and concentrated hydrochloric acid is heated.
Model Answer
MnO2(s) + HCl(aq) → Mn2+(aq) + Cl2(g) + H2O(l)
Calcium carbonate is added to aqueous hydrofluoric acid.
Model Answer
CaCO3(s) + HF(aq) → CaF2(s) + CO2(g) + H2O(l)
A mixture of benzene with concentrated nitric and sulfuric acids is carefully heated.