Write balanced equations describing the reaction of lithium metal with each of the following: $\mathrm{O}_{2}, \mathrm{S}, \mathrm{Cl}_{2}, \mathrm{P}_{2}, \mathrm{H}_{2}, \mathrm{H}_{2} \mathrm{O},\( and \)\mathrm{HCl} .$

Short Answer

Expert verified
The balanced equations for the reactions of lithium with the given elements and compounds are as follows: 1. \(4 \mathrm{Li}(s) + \mathrm{O}_{2}(g) \rightarrow 2 \mathrm{Li}_{2} \mathrm{O}(s)\) 2. \(2 \mathrm{Li}(s) + \mathrm{S}(s) \rightarrow \mathrm{Li}_{2} \mathrm{S}(s)\) 3. \(2 \mathrm{Li}(s) + \mathrm{Cl}_{2}(g) \rightarrow 2 \mathrm{LiCl}(s)\) 4. \(6 \mathrm{Li}(s) + \mathrm{P}_{2}(s) \rightarrow 2 \mathrm{Li}_{3} \mathrm{P}(s)\) 5. \(2 \mathrm{Li}(s) + \mathrm{H}_{2}(g) \rightarrow 2 \mathrm{LiH}(s)\) 6. \(2 \mathrm{Li}(s) + 2 \mathrm{H}_{2} \mathrm{O}(l) \rightarrow 2 \mathrm{LiOH}(aq) + \mathrm{H}_{2}(g)\) 7. \(2 \mathrm{Li}(s) + 2 \mathrm{HCl}(aq) \rightarrow 2 \mathrm{LiCl}(aq) + \mathrm{H}_{2}(g)\)

Step by step solution

01

Reaction with O₂

When lithium reacts with oxygen, it forms lithium oxide, Li₂O. The balanced chemical equation is: $$ 4 \mathrm{Li}(s) + \mathrm{O}_{2}(g) \rightarrow 2 \mathrm{Li}_{2} \mathrm{O}(s) $$
02

Reaction with S

When lithium reacts with sulfur, it forms lithium sulfide, Li₂S. The balanced chemical equation is: $$ 2 \mathrm{Li}(s) + \mathrm{S}(s) \rightarrow \mathrm{Li}_{2} \mathrm{S}(s) $$
03

Reaction with Cl₂

When lithium reacts with chlorine, it forms lithium chloride, LiCl. The balanced chemical equation is: $$ 2 \mathrm{Li}(s) + \mathrm{Cl}_{2}(g) \rightarrow 2 \mathrm{LiCl}(s) $$
04

Reaction with P₂

When lithium reacts with phosphorus, it forms lithium phosphide, Li₃P. The balanced chemical equation is: $$ 6 \mathrm{Li}(s) + \mathrm{P}_{2}(s) \rightarrow 2 \mathrm{Li}_{3} \mathrm{P}(s) $$
05

Reaction with H₂

When lithium reacts with hydrogen, it forms lithium hydride, LiH. The balanced chemical equation is: $$ 2 \mathrm{Li}(s) + \mathrm{H}_{2}(g) \rightarrow 2 \mathrm{LiH}(s) $$
06

Reaction with H₂O

When lithium reacts with water, it forms lithium hydroxide, LiOH, and hydrogen gas. The balanced chemical equation is: $$ 2 \mathrm{Li}(s) + 2 \mathrm{H}_{2} \mathrm{O}(l) \rightarrow 2 \mathrm{LiOH}(aq) + \mathrm{H}_{2}(g) $$
07

Reaction with HCl

When lithium reacts with hydrochloric acid, it forms lithium chloride, LiCl, and hydrogen gas. The balanced chemical equation is: $$ 2 \mathrm{Li}(s) + 2 \mathrm{HCl}(aq) \rightarrow 2 \mathrm{LiCl}(aq) + \mathrm{H}_{2}(g) $$

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