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Zinc chloride solution reacts with ammon...

Zinc chloride solution reacts with ammonium hydroxide solution to give a...............coloured precipitate.

A

blue

B

green

C

yellow

D

white

Text Solution

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The correct Answer is:
To solve the question regarding the reaction between zinc chloride (ZnCl₂) and ammonium hydroxide (NH₄OH), we will follow these steps: ### Step-by-Step Solution: 1. **Identify the Reactants**: The reactants in this reaction are zinc chloride (ZnCl₂) and ammonium hydroxide (NH₄OH). 2. **Write the Reaction**: When zinc chloride reacts with ammonium hydroxide, it forms zinc hydroxide (Zn(OH)₂) and ammonium chloride (NH₄Cl). The initial reaction can be written as: \[ ZnCl_2 + 2NH_4OH \rightarrow Zn(OH)_2 + 2NH_4Cl \] 3. **Formation of Precipitate**: Zinc hydroxide (Zn(OH)₂) is insoluble in water and will precipitate out of the solution. The precipitate formed is initially a white color. 4. **Excess Ammonium Hydroxide**: If excess ammonium hydroxide is added to the solution, zinc hydroxide can further react to form a soluble complex, known as zinc ammine chloride, which can be represented as: \[ Zn(OH)_2 + 4NH_4OH \rightarrow [Zn(NH_3)_4]Cl_2 + 4H_2O \] However, the precipitate of zinc hydroxide is still white in color. 5. **Conclusion**: The precipitate formed when zinc chloride reacts with ammonium hydroxide is white in color. ### Final Answer: The zinc chloride solution reacts with ammonium hydroxide solution to give a **white** colored precipitate. ---
To solve the question regarding the reaction between zinc chloride (ZnCl₂) and ammonium hydroxide (NH₄OH), we will follow these steps: ### Step-by-Step Solution: 1. **Identify the Reactants**: The reactants in this reaction are zinc chloride (ZnCl₂) and ammonium hydroxide (NH₄OH). 2. **Write the Reaction**: ...
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