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.
Solid calcium is heated in nitrogen gas.
Model Answer
Ca(s) + N2(g) → Ca3N2(s)
Solid sodium ethoxide is added to water.
Model Answer
NaOCH2CH3(s) + H2O → Na+(aq) + OH-(aq) + CH3CH2OH
Solutions of magnesium sulfate and barium hydroxide are mixed.
Model Answer
Mg2+(aq) + SO42-(aq) + Ba2+(aq) + 2OH-(aq) → BaSO4(s) + Mg(OH)2(s)
An acidic potassium permanganate solution is added to a solution of sodium sulfite.
Model Answer
MnO4-(aq) + H+(aq) + SO32-(aq) → Mn2+(aq) + H2O + SO42-(aq)
Radium-222 undergoes alpha decay.
Model Answer
222 88Ra → 4 2He + 218 86Rn
2-propanol is heated with concentrated sulfuric acid.
Model Answer
CH3CH(OH)CH3 --H2SO4--> CH3CH = CH2 + H2O