Question

balancing equations worksheet
1)___na3po4 +_koh→_naoh +___k3po4
2)___mgf2 +_li2co3→_mgco3 +___lif
3)___p4 +_o2→___p2o3
4)___rbno3 +_bef2→_be(no3)2 +___rbf
5)___agno3 +_cu→_cu(no3)2 +___ag
6)___cf4 +_br2→_cbr4 +___f2
7)___hcn +_cuso4→_h2so4 +___cu(cn)2
8)___gaf3 +_cs→_csf +___ga
9)___bas +_ptf2→_baf2 +___pts
10)___n2 +_h2→___nh3
11)___naf +_br2→_nabr +___f2
12)___pb(oh)2 +_hcl→_h2o +___pbcl2
13)___albr3 +_k2so4→_kbr +___al2(so4)3
14)___ch4 +_o2→_co2 +___h2o
15)___na3po4 +_cacl2→_nacl +___ca3(po4)2
16)___k +_cl2→___kcl
17)___al +_hcl→_h2 +___alcl3
18)___n2 +_f2→___nf3

Explanation:

Step1: Balance the first equation

For \(Na_3PO_4 + KOH
ightarrow NaOH+K_3PO_4\), balance \(K\) and \(Na\) atoms.
\(Na_3PO_4 + 3KOH = 3NaOH+K_3PO_4\)

Step2: Balance the second equation

For \(MgF_2 + Li_2CO_3
ightarrow MgCO_3+LiF\), balance \(Li\) and \(F\) atoms.
\(MgF_2 + Li_2CO_3 = MgCO_3+2LiF\)

Step3: Balance the third equation

For \(P_4 + O_2
ightarrow P_2O_3\), balance \(P\) and \(O\) atoms.
\(P_4 + 3O_2 = 2P_2O_3\)

Step4: Balance the fourth equation

For \(RbNO_3 + BeF_2
ightarrow Be(NO_3)_2+RbF\), balance \(Rb\) and \(NO_3\) groups.
\(2RbNO_3 + BeF_2 = Be(NO_3)_2+2RbF\)

Step5: Balance the fifth equation

For \(AgNO_3 + Cu
ightarrow Cu(NO_3)_2+Ag\), balance \(Ag\) and \(NO_3\) groups.
\(2AgNO_3 + Cu = Cu(NO_3)_2+2Ag\)

Step6: Balance the sixth equation

For \(CF_4 + Br_2
ightarrow CBr_4+F_2\), balance \(Br\) and \(F\) atoms.
\(CF_4 + 2Br_2 = CBr_4+2F_2\)

Step7: Balance the seventh equation

For \(HCN + CuSO_4
ightarrow H_2SO_4+Cu(CN)_2\), balance \(H\) and \(CN\) groups.
\(2HCN + CuSO_4 = H_2SO_4+Cu(CN)_2\)

Step8: Balance the eighth equation

For \(GaF_3 + Cs
ightarrow CsF+Ga\), balance \(Cs\) and \(F\) atoms.
\(GaF_3 + 3Cs = 3CsF+Ga\)

Step9: Balance the ninth equation

For \(BaS + PtF_2
ightarrow BaF_2+PtS\), the equation is already balanced.
\(BaS + PtF_2 = BaF_2+PtS\)

Step10: Balance the tenth equation

For \(N_2 + H_2
ightarrow NH_3\), balance \(N\) and \(H\) atoms.
\(N_2 + 3H_2 = 2NH_3\)

Step11: Balance the eleventh equation

For \(NaF + Br_2
ightarrow NaBr+F_2\), balance \(Na\), \(Br\) and \(F\) atoms.
\(2NaF + Br_2 = 2NaBr+F_2\)

Step12: Balance the twelfth equation

For \(Pb(OH)_2 + HCl
ightarrow H_2O+PbCl_2\), balance \(Cl\) and \(H\) atoms.
\(Pb(OH)_2 + 2HCl = 2H_2O+PbCl_2\)

Step13: Balance the thirteenth equation

For \(AlBr_3 + K_2SO_4
ightarrow KBr+Al_2(SO_4)_3\), balance \(Al\), \(Br\) and \(SO_4\) groups.
\(2AlBr_3 + 3K_2SO_4 = 6KBr+Al_2(SO_4)_3\)

Step14: Balance the fourteenth equation

For \(CH_4 + O_2
ightarrow CO_2+H_2O\), balance \(C\), \(H\) and \(O\) atoms.
\(CH_4 + 2O_2 = CO_2+2H_2O\)

Step15: Balance the fifteenth equation

For \(Na_3PO_4 + CaCl_2
ightarrow NaCl+Ca_3(PO_4)_2\), balance \(Na\), \(Ca\) and \(PO_4\) groups.
\(2Na_3PO_4 + 3CaCl_2 = 6NaCl+Ca_3(PO_4)_2\)

Step16: Balance the sixteenth equation

For \(K + Cl_2
ightarrow KCl\), balance \(K\) and \(Cl\) atoms.
\(2K + Cl_2 = 2KCl\)

Step17: Balance the seventeenth equation

For \(Al + HCl
ightarrow H_2+AlCl_3\), balance \(Al\), \(H\) and \(Cl\) atoms.
\(2Al + 6HCl = 3H_2+2AlCl_3\)

Step18: Balance the eighteenth equation

For \(N_2 + F_2
ightarrow NF_3\), balance \(N\) and \(F\) atoms.
\(N_2 + 3F_2 = 2NF_3\)

Answer:

1. \(1Na_3PO_4 + 3KOH = 3NaOH+1K_3PO_4\)
2. \(1MgF_2 + 1Li_2CO_3 = 1MgCO_3+2LiF\)
3. \(1P_4 + 3O_2 = 2P_2O_3\)
4. \(2RbNO_3 + 1BeF_2 = 1Be(NO_3)_2+2RbF\)
5. \(2AgNO_3 + 1Cu = 1Cu(NO_3)_2+2Ag\)
6. \(1CF_4 + 2Br_2 = 1CBr_4+2F_2\)
7. \(2HCN + 1CuSO_4 = 1H_2SO_4+1Cu(CN)_2\)
8. \(1GaF_3 + 3Cs = 3CsF+1Ga\)
9. \(1BaS + 1PtF_2 = 1BaF_2+1PtS\)
10. \(1N_2 + 3H_2 = 2NH_3\)
11. \(2NaF + 1Br_2 = 2NaBr+1F_2\)
12. \(1Pb(OH)_2 + 2HCl = 2H_2O+1PbCl_2\)
13. \(2AlBr_3 + 3K_2SO_4 = 6KBr+1Al_2(SO_4)_3\)
14. \(1CH_4 + 2O_2 = 1CO_2+2H_2O\)
15. \(2Na_3PO_4 + 3CaCl_2 = 6NaCl+1Ca_3(PO_4)_2\)
16. \(2K + 1Cl_2 = 2KCl\)
17. \(2Al + 6HCl = 3H_2+2AlCl_3\)
18. \(1N_2 + 3F_2 = 2NF_3\)