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Chapter 14: Problem 132

Will the following oxides give acidic, basic, or neutral solutions when dissolved in water? Write reactions to justify your answers. a. \(\mathrm{Li}_{2} \mathrm{O}\) b. \(\mathrm{CO}_{2}\) c. \(\mathrm{SrO}\)

Short Answer

Expert verified
a. Li鈧侽 + H鈧侽 鉄� 2 LiOH; forms a basic solution (LiOH is a strong alkali). b. CO鈧� + H鈧侽 鉄� H鈧侰O鈧�; forms an acidic solution (H鈧侰O鈧� is a weak acid). c. SrO + H鈧侽 鉄� Sr(OH)鈧�; forms a basic solution (Sr(OH)鈧� is a strong alkali).

Step by step solution

01

Reaction of Li鈧侽 with water

First, we will write the balanced reaction for lithium oxide (Li鈧侽) dissolving in water (H鈧侽). Li鈧侽 + H鈧侽 鉄� 2 LiOH The resulting product is lithium hydroxide (LiOH), which is a strong alkali. Since the solution contains a hydroxide ion (OH鈦�), it will be a basic solution.
02

Reaction of CO鈧� with water

Next, we will write the balanced reaction for carbon dioxide (CO鈧�) dissolving in water (H鈧侽). CO鈧� + H鈧侽 鉄� H鈧侰O鈧� The resulting product is carbonic acid (H鈧侰O鈧�), which is a weak acid. Since the solution contains an acidic component (H+), it will be an acidic solution.
03

Reaction of SrO with water

Finally, we will write the balanced reaction for strontium oxide (SrO) dissolving in water (H鈧侽). SrO + H鈧侽 鉄� Sr(OH)鈧� The resulting product is strontium hydroxide (Sr(OH)鈧�), which is a strong alkali. Since the solution contains a hydroxide ion (OH鈦�), it will be a basic solution. In conclusion: a. Lithium oxide (Li鈧侽) forms a basic solution when dissolved in water. b. Carbon dioxide (CO鈧�) forms an acidic solution when dissolved in water. c. Strontium oxide (SrO) forms a basic solution when dissolved in water.

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Most popular questions from this chapter

Write the reaction and the corresponding \(K_{\mathrm{b}}\) equilibrium expression for each of the following substances acting as bases in water. a. \(\mathrm{NH}_{3}\) b. \(\mathrm{C}_{5} \mathrm{H}_{5} \mathrm{~N}\)

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