Balancing Chemical Reactions

Balance the equation:

PCl5(s)+H2O(l)→POCl3(l)+HCl(aq)

• 2PCl5(s)+H2O(l)→POCl3(l)+2HCl(aq)

• 2PCl5(s)+3H2O(l)→3POCl3(l)+2HCl(aq)

• PCl5(s)+2H2O(l)→POCl3(l)+2HCl(aq)

• PCl5(s)+H2O(l)→POCl3(l)+2HCl(aq)

Balance the equation:

Cu(s)+HNO3(aq)→Cu(NO3)2(aq)+H2O(l)+NO(g)

• 2Cu(s)+8HNO3(aq)→2Cu(NO3)2(aq)+4H2O(l)+2NO(g)

• 3Cu(s)+8HNO3(aq)→3Cu(NO3)2(aq)+4H2O(l)+2NO(g)

• Cu(s)+8HNO3(aq)→3Cu(NO3)2(aq)+H2O(l)+NO(g)

• 2Cu(s)+4HNO3(aq)→2Cu(NO3)2(aq)+2H2O(l)+NO(g)

Balance the equation:

H2(g)+I2(s)→HI(s)

• H2(g)+I2(s)→2HI(s)

• 2H2(g)+I2(s)→2HI(s)

• H2(g)+2I2(s)→2HI(s)

• 2H2(g)+2I2(s)→2HI(s)

Balance the equation:

Fe(s)+O2(g)→Fe2O3(s)

• 3Fe(s)+3O2(g)→3Fe2O3(s)

• 4Fe(s)+3O2(g)→2Fe2O3(s)

• 3Fe(s)+3O2(g)→2Fe2O3(s)

• 4Fe(s)+4O2(g)→4Fe2O3(s)

Balance the equation:

Na(s)+H2O(l)→NaOH(aq)+H2(g)

• 3Na(s)+2H2O(l)→2NaOH(aq)+H2(g)

• 4Na(s)+3H2O(l)→3NaOH(aq)+4H2(g)

• Na(s)+2H2O(l)→NaOH(aq)+2H2(g)

• 2Na(s)+2H2O(l)→2NaOH(aq)+H2(g)

Balance the equation:

P4(s)+Cl2(g)→PCl3(l)

• P4(s)+6Cl2(g)→4PCl3(l)

• 2P4(s)+2Cl2(g)→2PCl3(l)

• 3P4(s)+4Cl2(g)→3PCl3(l)

• 2P4(s)+Cl2(g)→3PCl3(l)

Balance the equation:

PtCl4(s)→Pt(s)+Cl2(g)

• 2PtCl4(s)→Pt(s)+4Cl2(g)

• PtCl4(s)→Pt(s)+3Cl2(g)

• PtCl4(s)→Pt(s)+2Cl2(g)

• 3PtCl4(s)→Pt(s)+2Cl2(g)