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.

Q1:

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

Q2:

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

Q3:

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+

Q4:

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

Q5:

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

Q6:

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

Q7:

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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