Chapter 10: Problem 8

Write complete balanced equation for the reaction of the following compounds with water. (a) \(\mathrm{Li}_{2} \mathrm{O}\) (b) NaH (c) \(\mathrm{NaNH}_{2}\) (d) \(\mathrm{C}_{2} \mathrm{H}_{2}\) (e) \(\mathrm{Na}_{2} \mathrm{O}_{2}\)

Short Answer

Expert verified

(a) \(\mathrm{Li}_{2}\mathrm{O} + \mathrm{H}_{2}\mathrm{O} \rightarrow 2 \mathrm{LiOH}\)\n(b) \(\mathrm{NaH} + \mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{NaOH} + \mathrm{H}_{2}\)\n(c) \(\mathrm{NaNH}_{2} + \mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{NaOH} + \mathrm{NH}_{3}\)\n(d) \(\mathrm{C}_{2}\mathrm{H}_{2} + \mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{C}_{2}\mathrm{H}_{2} + \mathrm{H}_{2}\mathrm{O}\)\n(e) \(\mathrm{Na}_{2}\mathrm{O}_{2} + 2 \mathrm{H}_{2}\mathrm{O} \rightarrow 2 \mathrm{NaOH} + \mathrm{O}_{2}\)

Step by step solution

Reaction of Lithium Oxide with water

The Lithium Oxide (\(\mathrm{Li}_{2}\mathrm{O}\)) reacts with water (\(\mathrm{H}_{2}\mathrm{O}\)) to form Lithium Hydroxide (\(\mathrm{LiOH}\)):\[ \mathrm{Li}_{2}\mathrm{O} + \mathrm{H}_{2}\mathrm{O} \rightarrow 2 \mathrm{LiOH} \]

Reaction of Sodium Hydride with water

Sodium Hydride (NaH) reacts with water (\(\mathrm{H}_{2}\mathrm{O}\)) to form Sodium Hydroxide (\(\mathrm{NaOH}\)) and Hydrogen gas (\(\mathrm{H}_{2}\)):\[ \mathrm{NaH} + \mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{NaOH} + \mathrm{H}_{2} \]

Reaction of Sodium Amide with water

Sodium Amide (\(\mathrm{NaNH}_{2}\)) reacts with water (\(\mathrm{H}_{2}\mathrm{O}\)) to form Sodium Hydroxide (\(\mathrm{NaOH}\)) and Ammonia (\(\mathrm{NH}_{3}\)):\[ \mathrm{NaNH}_{2} + \mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{NaOH} + \mathrm{NH}_{3} \]

Reaction of Acetylene with water

Acetylene (\(\mathrm{C}_{2}\mathrm{H}_{2}\)) doesn't react with water under normal conditions, so no changes would occur:\[ \mathrm{C}_{2}\mathrm{H}_{2} + \mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{C}_{2}\mathrm{H}_{2} + \mathrm{H}_{2}\mathrm{O} \]

Reaction of Sodium peroxide with water

Sodium Peroxide (\(\mathrm{Na}_{2}\mathrm{O}_{2}\)) reacts with water (\(\mathrm{H}_{2}\mathrm{O}\)) to form Sodium Hydroxide (\(\mathrm{NaOH}\)) and Oxygen (\(\mathrm{O}_{2}\)):\[ \mathrm{Na}_{2}\mathrm{O}_{2} + 2 \mathrm{H}_{2}\mathrm{O} \rightarrow 2 \mathrm{NaOH} + \mathrm{O}_{2} \]

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Write complete balanced equation for the reaction of the following compounds with water. (a) \(\mathrm{Li}_{2} \mathrm{O}\) (b) NaH (c) \(\mathrm{NaNH}_{2}\) (d) \(\mathrm{C}_{2} \mathrm{H}_{2}\) (e) \(\mathrm{Na}_{2} \mathrm{O}_{2}\)

Short Answer

Step by step solution

Reaction of Lithium Oxide with water

Reaction of Sodium Hydride with water

Reaction of Sodium Amide with water

Reaction of Acetylene with water

Reaction of Sodium peroxide with water

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