Worksheet: Ionic Equations

In this worksheet, we will practice converting molecular equations to net ionic equations by identifying the charges and states of ionic species.


What is the ionic form of the chemical expression CuSO()4aq?

  • ACu()+SO()aqaq4
  • BCu()+S()+2O()aqaqaq2
  • CCu()+SO()2+42aqaq
  • DCu()+SO()+4aqaq
  • ECu()+S()+4O()2+22aqaqaq


A redox reaction is described by the equation: Mg()+CuSO()MgSO()+Cu()saqaqs44. Including the state symbol, identify the spectator ion in this reaction.

  • AMg()2+aq
  • BCu()2+aq
  • CMg()s
  • DSO()42aq
  • ECu()s


Which of the following are the spectator ions in the reaction shown? AgNO()+NHCrO()NHNO()+AgCrO()344434aqaqaqs

  • ANO3 and NH+4
  • BAg+ and NH+4
  • CAg+ and CrO4
  • DNO3 and CrO4
  • ENO3 and Ag+


How many atoms and ions does a single unit of (NH)SO424 contain? (NH)SO424

  • A15 atoms covalently bonded in 4 ions
  • B15 atoms covalently bonded in 2 ions
  • C10 atoms covalently bonded in 3 ions
  • D4 atoms covalently bonded in 4 ions
  • E15 atoms covalently bonded in 3 ions


Which ions are present in the ionic compound NHCl4?

  • ANH2+4 and Cl
  • BH+ and Cl
  • CN3, H+ and Cl
  • DNH+4 and Cl
  • ENH3, H+ and Cl


What are the correct substitutions for 𝑋 and Y to complete and balance the partial ionic equation shown? Fe()+OH()Y()3+aqXaqs

  • A𝑋1:, Y:FeOH
  • B𝑋3:, Y:FeO23
  • C𝑋2:, Y:Fe(OH)2
  • D𝑋3:, Y:Fe(OH)3
  • E𝑋1:, Y:Fe(OH)3


Aluminum reacts with excess dilute hydrochloric acid to produce hydrogen gas. The resulting solution contains nontrivial quantities of the following ions: Al3+, H+, and Cl.

A student writes out a net ionic equation for the reaction. Which ion is not included in the net ionic equation?

  • AH+
  • BAl3+
  • CCl

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