Practice Net Ionic Equation in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

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Quick Recap

A simplified chemical equation that shows only the ions and molecules directly involved in a chemical reaction, with all spectator ions (those unchanged on both sides) removed.

Strip away the bystanders. Some ions just float around doing nothing — the net ionic equation shows only the ones that actually react.

Showing a random 20 of 50 problems.

Example 1

medium
Write the net ionic equation for Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)\text{Mg(s)} + 2\text{HCl(aq)} \rightarrow \text{MgCl}_2\text{(aq)} + \text{H}_2\text{(g)}.

Example 2

medium
Should HF(aq)\text{HF(aq)} (weak acid) be split into ions in a net ionic equation?

Example 3

easy
Should H2O(l)\text{H}_2\text{O(l)} ever be broken into ions in a net ionic equation?

Example 4

easy
Write the net ionic equation for AgNO3(aq)+KCl(aq)→AgCl(s)+KNO3(aq)\text{AgNO}_3\text{(aq)} + \text{KCl(aq)} \rightarrow \text{AgCl(s)} + \text{KNO}_3\text{(aq)}.

Example 5

medium
Net ionic for FeCl3(aq)+3NaOH(aq)→Fe(OH)3(s)+3NaCl(aq)\text{FeCl}_3\text{(aq)} + 3\text{NaOH(aq)} \rightarrow \text{Fe(OH)}_3\text{(s)} + 3\text{NaCl(aq)}.

Example 6

medium
Write the net ionic equation for AgNO3(aq)+NaCl(aq)→AgCl(s)+NaNO3(aq)AgNO_3(aq) + NaCl(aq) \rightarrow AgCl(s) + NaNO_3(aq).

Example 7

medium
Net ionic for Cu(NO3)2(aq)+2NaOH(aq)→Cu(OH)2(s)+2NaNO3(aq)\text{Cu(NO}_3)_2\text{(aq)} + 2\text{NaOH(aq)} \rightarrow \text{Cu(OH)}_2\text{(s)} + 2\text{NaNO}_3\text{(aq)}.

Example 8

easy
In a neutralization between any strong acid and strong base, what is always the net ionic equation?

Example 9

easy
In Ag++Cl−→AgCl(s)Ag^+ + Cl^- \rightarrow AgCl(s), is this already a net ionic equation?

Example 10

hard
Net ionic for CH3COOH(aq)+NaOH(aq)→CH3COONa(aq)+H2O(l)\text{CH}_3\text{COOH(aq)} + \text{NaOH(aq)} \rightarrow \text{CH}_3\text{COONa(aq)} + \text{H}_2\text{O(l)}.

Example 11

easy
Write the net ionic equation for 2NaOH(aq)+H2SO4(aq)→Na2SO4(aq)+2H2O(l)2\text{NaOH(aq)} + \text{H}_2\text{SO}_4\text{(aq)} \rightarrow \text{Na}_2\text{SO}_4\text{(aq)} + 2\text{H}_2\text{O(l)}.

Example 12

hard
Does mixing NaNO3(aq)\text{NaNO}_3\text{(aq)} and KCl(aq)\text{KCl(aq)} produce a net ionic reaction?

Example 13

medium
Net ionic for HF(aq)+NaOH(aq)→NaF(aq)+H2O(l)\text{HF(aq)} + \text{NaOH(aq)} \rightarrow \text{NaF(aq)} + \text{H}_2\text{O(l)}.

Example 14

medium
Net ionic for BaCl2(aq)+Na2SO4(aq)→BaSO4(s)+2NaCl(aq)BaCl_2(aq) + Na_2SO_4(aq) \rightarrow BaSO_4(s) + 2NaCl(aq)?

Example 15

medium
Should weak acid acetic acid CH3COOHCH_3COOH be split in a net ionic equation?

Example 16

hard
Determine the net ionic equation for AgNO3(aq)+Na3PO4(aq)→Ag3PO4(s)+NaNO3(aq)\text{AgNO}_3\text{(aq)} + \text{Na}_3\text{PO}_4\text{(aq)} \rightarrow \text{Ag}_3\text{PO}_4\text{(s)} + \text{NaNO}_3\text{(aq)}.

Example 17

medium
Write the net ionic equation for Pb(NO3)2(aq)+2NaCl(aq)→PbCl2(s)+2NaNO3(aq)\text{Pb(NO}_3)_2\text{(aq)} + 2\text{NaCl(aq)} \rightarrow \text{PbCl}_2\text{(s)} + 2\text{NaNO}_3\text{(aq)}.

Example 18

medium
Write the net ionic equation for the reaction between BaCl2(aq)\text{BaCl}_2\text{(aq)} and Na2SO4(aq)\text{Na}_2\text{SO}_4\text{(aq)}.

Example 19

medium
Write the net ionic equation for CaCO3(s)+2HCl(aq)→CaCl2(aq)+H2O(l)+CO2(g)\text{CaCO}_3\text{(s)} + 2\text{HCl(aq)} \rightarrow \text{CaCl}_2\text{(aq)} + \text{H}_2\text{O(l)} + \text{CO}_2\text{(g)}.

Example 20

challenge
Verify the net ionic 3Ca2++2PO43−→Ca3(PO4)2(s)3Ca^{2+} + 2PO_4^{3-} \rightarrow Ca_3(PO_4)_2(s) balances atoms and charge.
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