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Chapter 13: Problem 135

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

Short Answer

Expert verified
In conclusion, CaO will give a basic solution when dissolved in water, as shown by the reaction: \(CaO (s) + H_{2}O (l) \rightarrow Ca(OH)_{2} (aq)\). Both SO₂ and Cl₂O will give acidic solutions when dissolved in water, as shown by the reactions: \(SO_{2}(g) + H_{2}O(l) \rightarrow H_{2}SO_{3}(aq)\) and \(Cl_{2}O (g) + H_{2}O (l) \rightarrow 2HClO (aq)\), respectively.

Step by step solution

01

a. CaO - Calcium oxide

Ca is a metal, and since the oxide of the metal gives a basic solution, CaO will give a basic solution when dissolved in water. The balanced chemical reaction is as follows: \[ CaO (s) + H_{2}O (l) \rightarrow Ca(OH)_{2} (aq) \] In this reaction, calcium oxide (CaO) reacts with water to produce calcium hydroxide (Ca(OH)₂), which is a strong base.
02

b. SO₂ - Sulfur dioxide

S is a non-metal, so its oxide, SO₂, would give an acidic solution when dissolved in water. The balanced chemical reaction is as follows: \[ SO_{2}(g) + H_{2}O(l) \rightarrow H_{2}SO_{3}(aq) \] In this reaction, sulfur dioxide (SO₂) reacts with water to produce sulfurous acid (H₂SO₃), which is a weak acid.
03

c. Cl₂O - Dichlorine monoxide

Cl is a non-metal, so its oxide, Cl₂O, would give an acidic solution when dissolved in water. The balanced chemical reaction is as follows: \[ Cl_{2}O (g) + H_{2}O (l) \rightarrow 2HClO (aq) \] In this reaction, dichlorine monoxide (Cl₂O) reacts with water to produce hypochlorous acid (HClO), which is a weak acid. In conclusion, we found that CaO will give a basic solution, while SO₂ and Cl₂O will give acidic solutions when dissolved in water.

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