Question

1. $c_6h_{12}o_6 + o_2 \

ightarrow co_2 + h_2o$

1. $al + o_2 \

ightarrow al_2o_3$

1. $naoh + h_2so_4 \

ightarrow na_2so_4 + h_2o$

1. $c_6h_{14} + o_2 \

ightarrow co_2 + h_2o$

1. $pb(no_3)_2 + k_2cro_4 \

ightarrow pbcro_4 + kno_3$

1. $h_2 + n_2 \

ightarrow nh_3$

1. $c_7h_{16} + o_2 \

ightarrow h_2o + co_2$

1. $fe + cucl_2 \

ightarrow fecl_3 + cu$

1. $kclo_3 \

ightarrow kcl + o_2$

1. $mg + hcl \

ightarrow mgcl_2 + h_2$

Explanation:

Step1: Balance C₆H₁₂O₆ combustion

Balance C, H, then O:

$$\mathrm{C_6H_{12}O_6 + 6O_2 ightarrow 6CO_2 + 6H_2O}$$

Step2: Balance Al oxidation

Balance Al, then O:

$$\mathrm{4Al + 3O_2 ightarrow 2Al_2O_3}$$

Step3: Balance acid-base reaction

Balance Na, SO₄, then H/O:

$$\mathrm{2NaOH + H_2SO_4 ightarrow Na_2SO_4 + 2H_2O}$$

Step4: Balance C₈H₁₄ combustion

Balance C, H, then O:

$$\mathrm{2C_8H_{14} + 23O_2 ightarrow 16CO_2 + 14H_2O}$$

Step5: Balance double displacement

Balance K, NO₃:

$$\mathrm{Pb(NO_3)_2 + K_2CrO_4 ightarrow PbCrO_4 + 2KNO_3}$$

Step6: Balance NH₃ synthesis

Balance N, then H:

$$\mathrm{3H_2 + N_2 ightarrow 2NH_3}$$

Step7: Balance C₇H₁₆ combustion

Balance C, H, then O:

$$\mathrm{C_7H_{16} + 11O_2 ightarrow 8H_2O + 7CO_2}$$

Step8: Balance single displacement

Balance Cl, then Fe/Cu:

$$\mathrm{2Fe + 3CuCl_2 ightarrow 2FeCl_3 + 3Cu}$$

Step9: Balance KClO₃ decomposition

Balance K/Cl, then O:

$$\mathrm{2KClO_3 ightarrow 2KCl + 3O_2}$$

Step10: Balance Mg + HCl reaction

Balance Cl, then H:

$$\mathrm{Mg + 2HCl ightarrow MgCl_2 + H_2}$$

Answer:

1. $\mathrm{C_6H_{12}O_6 + 6O_2

ightarrow 6CO_2 + 6H_2O}$

1. $\mathrm{4Al + 3O_2

ightarrow 2Al_2O_3}$

1. $\mathrm{2NaOH + H_2SO_4

ightarrow Na_2SO_4 + 2H_2O}$

1. $\mathrm{2C_8H_{14} + 23O_2

ightarrow 16CO_2 + 14H_2O}$

1. $\mathrm{Pb(NO_3)_2 + K_2CrO_4

ightarrow PbCrO_4 + 2KNO_3}$

1. $\mathrm{3H_2 + N_2

ightarrow 2NH_3}$

1. $\mathrm{C_7H_{16} + 11O_2

ightarrow 8H_2O + 7CO_2}$

1. $\mathrm{2Fe + 3CuCl_2

ightarrow 2FeCl_3 + 3Cu}$

1. $\mathrm{2KClO_3

ightarrow 2KCl + 3O_2}$

1. $\mathrm{Mg + 2HCl

ightarrow MgCl_2 + H_2}$