Write net equations for each of these reactions. Use appropriate ionic and molecular formulas for th — Descriptive Chemistry Chemistry Question
Problem Context
Write net equations for each of these reactions. Use appropriate ionic and molecular formulas for the reactants and products. 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 reactions. All reactions occur in aqueous solution unless otherwise indicated.
Concentrated hydrochloric acid is added to solid manganese(IV) oxide.
Model Answer
Note: Balanced equations were not required.
H+ + Cl– + MnO2 → Cl2 + Mn2+ + H2O
Solutions of magnesium sulfate and barium hydroxide are mixed.
Model Answer
Mg2+ + SO4 2– + Ba2+ + OH– → BaSO4 + Mg(OH)2
Solid barium peroxide is added to water.
Model Answer
BaO2 + H2O → Ba2+ + OH– + O2H –
A piece of copper metal is added to a solution of dilute nitric acid.
Model Answer
Cu + H+ + NO3 – → Cu2+ + NO + H2O
A solution of sodium thiosulfate is added to a suspension of solid silver bromide.
Model Answer
AgBr + S2O3 2– → Ag(S2O3)2 3– + Br–
2-butanol is heated with a solution of acidified potassium dichromate.
Model Answer
+ Cr2O7 2– + H+ → + Cr3+ + H2O