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Chapter 4: Problem 29

Calcium chloride is a strong electrolyte and is used to “salt” streets in the winter to melt ice and snow. Write a reaction to show how this substance breaks apart when it dissolves in water

Short Answer

Expert verified
The dissociation of calcium chloride (CaCl₂) in water can be represented by the balanced chemical equation: CaCl₂ (s) → Ca²⁺ (aq) + 2Cl⁻ (aq). This shows that one molecule of solid calcium chloride dissociates into one calcium ion (Ca²⁺) and two chloride ions (Cl⁻) when dissolved in water.

Step by step solution

01

Identify the ions in calcium chloride

In a calcium chloride molecule, there is one calcium ion (Ca²⁺) and two chloride ions (Cl⁻). When calcium chloride dissociates, these ions will separate.
02

Write the balanced chemical equation for the dissociation of calcium chloride

Now we will write the balanced chemical equation for the dissociation of calcium chloride in water: CaCl₂ (s) → Ca²⁺ (aq) + 2Cl⁻ (aq) In this equation, (s) indicates that calcium chloride is in the solid-state, and (aq) means the ions are dissolved in water. The balanced chemical equation shows that one molecule of solid calcium chloride dissociates into one calcium ion and two chloride ions when dissolved in water.

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Most popular questions from this chapter

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