8.____al + ____fe₂o₃→____al₂o₃ + ____fe\n9.____na + ____i₂→____nai\n10.____mg + ____o₂→____mgo\n11.____na₂co₃…

8.____al + ____fe₂o₃→____al₂o₃ + ____fe\n9.____na + ____i₂→____nai\n10.____mg + ____o₂→____mgo\n11.____na₂co₃ + ____cacl₂→____caco₃ + ____nacl\n12.____agno₃ + ____zncl₂→____agcl + ____zn(no₃)₂\n13.____feso₄ + ____(nh₄)₂s→____fes + ____(nh₄)₂so₄\n14.____mg + ____h₃po₄→____mg₃(po₄)₂ + ____h₂\n15.____cl₂ + ____ali₃→____alcl₃ + ____i₂

8.____al + ____fe₂o₃→____al₂o₃ + ____fe\n9.____na + ____i₂→____nai\n10.____mg + ____o₂→____mgo\n11.____na₂co₃ + ____cacl₂→____caco₃ + ____nacl\n12.____agno₃ + ____zncl₂→____agcl + ____zn(no₃)₂\n13.____feso₄ + ____(nh₄)₂s→____fes + ____(nh₄)₂so₄\n14.____mg + ____h₃po₄→____mg₃(po₄)₂ + ____h₂\n15.____cl₂ + ____ali₃→____alcl₃ + ____i₂

Answer

Explanation:

Step1: Balance the equation for question 8

For the equation (Al + Fe_2O_3\rightarrow Al_2O_3+Fe), balance the (Al) atoms: (2Al + Fe_2O_3\rightarrow Al_2O_3+Fe). Then balance the (Fe) atoms: (2Al + Fe_2O_3\rightarrow Al_2O_3 + 2Fe).

Step2: Balance the equation for question 9

For the equation (Na+I_2\rightarrow NaI), balance the (I) atoms: (2Na+I_2\rightarrow 2NaI).

Step3: Balance the equation for question 10

For the equation (Mg + O_2\rightarrow MgO), balance the (O) atoms: (2Mg+O_2\rightarrow 2MgO).

Step4: Balance the equation for question 11

For the equation (Na_2CO_3+CaCl_2\rightarrow CaCO_3 + NaCl), balance the (Na) and (Cl) atoms: (Na_2CO_3+CaCl_2\rightarrow CaCO_3 + 2NaCl).

Step5: Balance the equation for question 12

For the equation (AgNO_3+ZnCl_2\rightarrow AgCl+Zn(NO_3)_2), balance the (Ag), (Cl) and (NO_3) groups: (2AgNO_3+ZnCl_2\rightarrow 2AgCl+Zn(NO_3)_2).

Step6: Balance the equation for question 13

For the equation (FeSO_4+(NH_4)_2S\rightarrow FeS+(NH_4)_2SO_4), the equation is already balanced as (FeSO_4+(NH_4)_2S\rightarrow FeS+(NH_4)_2SO_4).

Step7: Balance the equation for question 14

For the equation (Mg + H_3PO_4\rightarrow Mg_3(PO_4)_2+H_2), balance the (Mg) atoms: (3Mg + H_3PO_4\rightarrow Mg_3(PO_4)_2+H_2). Then balance the (H) and (PO_4) groups: (3Mg + 2H_3PO_4\rightarrow Mg_3(PO_4)_2+3H_2).

Step8: Balance the equation for question 15

For the equation (Cl_2+AlI_3\rightarrow AlCl_3+I_2), balance the (Cl) and (I) atoms: (3Cl_2+2AlI_3\rightarrow 2AlCl_3+3I_2).

Answer:

  1. (2Al + 1Fe_2O_3\rightarrow 1Al_2O_3 + 2Fe)
  2. (2Na+1I_2\rightarrow 2NaI)
  3. (2Mg+1O_2\rightarrow 2MgO)
  4. (1Na_2CO_3+1CaCl_2\rightarrow 1CaCO_3 + 2NaCl)
  5. (2AgNO_3+1ZnCl_2\rightarrow 2AgCl+1Zn(NO_3)_2)
  6. (1FeSO_4+1(NH_4)_2S\rightarrow 1FeS+1(NH_4)_2SO_4)
  7. (3Mg + 2H_3PO_4\rightarrow 1Mg_3(PO_4)_2+3H_2)
  8. (3Cl_2+2AlI_3\rightarrow 2AlCl_3+3I_2)