Question

Balance the following equations after writing them as molecular equations.

a) Sodium + Nitrogen -> Sodium nitride

b) Aluminum + Chlorine -> Aluminum chloride

c) Iron (III) oxide + Hydrogen ->Iron + Water

d) Phosphorous + oxygen -> Phosphorus pentoxide

e) Tri-lead tetra oxide -> Lead monoxide + Oxygen.
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Answer 1

Balance the following equations after writing them as molecular equations :

a) Sodium + Nitrogen -> Sodium nitride

$\sf{6Na+N_2-->2Na_3N}$

b) Aluminum + Chlorine -> Aluminum chloride

$\sf{2Al+3Cl_2-->2AlCl_3}$

c) Iron (III) oxide + Hydrogen ->Iron + Water

$\sf{Fe_2O_3+3H_2-->2Fe+3H_2O}$

d) Phosphorous + oxygen -> Phosphorus pentoxide

$\sf{4P+5O_2-->2P_2O_5}$

e) Tri-lead tetra oxide -> Lead monoxide + Oxygen

$\sf{2Pb_3O_4-->6PbO+O_2}$

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Answer 2

AnswEr:

a). Sodium + Nitrogen $\longrightarrow$ Sodium nitride

★ Sodium combines with nitrogen to form sodium nitride.

→ $\red{\sf{6Na\:+\:N_{2} \longrightarrow 2Na_{3} N}}$

b). Aluminum + Chlorine $\longrightarrow$ Aluminium chloride

★ Aluminium combines with chlorine to form aluminium chloride.

→ $\red{\sf{2Al\:+\:3Cl_{2} \longrightarrow 2AlCl_{3}}}$

c). Iron (III) oxide + Hydrogen $\longrightarrow$ Iron + Water

★ Iron oxide combines with hydrogen to form iron and water.

→ $\red{\sf{Fe_{2} O_{3} + 3H_{2} \longrightarrow 2Fe + 3H_{2} O}}$

d). Phosphorus + oxygen $\longrightarrow$ Phosphorus pentoxide

★ Phosphorus combines with oxygen to form phosphorus pentoxide.

→ $\red{\sf{4P + 5O_{2} \longrightarrow 2P_{2} O_{5}}}$

e). Tri - lead tetra oxide $\longrightarrow$ Lead monoxide + oxygen

★ Tri - lead tetra oxide decomposes to form lead monoxide and oxygen.

→ $\red{\sf{2Pb_{3} O_{4} \longrightarrow 6PbO + O_{2}}}$

$\rule{200}2$