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7.3.1: Practice Balancing Reactions

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    236042
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    Balance Chemical Reactions

    Exercise \(\PageIndex{1}\)

    For each of the following, adjust the coefficients so the reaction is balanced.

    NO2 (g) + H2O (l) \(\rightarrow\) HNO3 (aq) + NO (g)

    Answer

    3 NO2 (g) + H2O (l) \(\rightarrow\) 2 HNO3 (aq) + NO (g)

    N2 (g) + O2 (g) \(\rightarrow\) N2O5 (g)

    Answer

    2 N2 (g) + 5 O2 (g) \(\rightarrow\) 2 N2O5 (g)

    C5H10O (l) + O2 (g) \(\rightarrow\) CO2 (g) + H2O (g)

    Answer

    C5H10O (l) + 7 O2 (g) \(\rightarrow\) 5 CO2 (g) + 5 H2O (g)

    ZnCl2 (aq) + AgNO3 (aq) \(\rightarrow\) Zn(NO3)2 (aq) + AgCl (s)

    Answer

    ZnCl2 (aq) + 2 AgNO3 (aq) \(\rightarrow\) Zn(NO3)2 (aq) + 2 AgCl (s)

    BaCl2 (aq) + Na3PO4 (aq) \(\rightarrow\) Ba3(PO4)2 (s) + NaCl (aq)

    Answer

    3 BaCl2 (aq) + 2 Na3PO4 (aq) \(\rightarrow\) Ba3(PO4)2 (s) + 6 NaCl (aq)

    C6H10 (l) + O2 (g) \(\rightarrow\) CO2 (g) + H2O (g)

    Answer

    2 C6H10 (l) + 17 O2 (g) \(\rightarrow\) 12 CO2 (g) + 10 H2O (g)

    Mg (s) + HCl (aq) \(\rightarrow\) MgCl2 (aq) + H2 (g)

    Answer

    Mg (s) + 2 HCl (aq) \(\rightarrow\) MgCl2 (aq) + H2 (g)


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