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The colour of the solid produced by addi...

The colour of the solid produced by adding `SnCl_2` in excess to a solution of `HgCl_2` is

A

white

B

black

C

yellow

D

brown

Text Solution

AI Generated Solution

The correct Answer is:
To determine the color of the solid produced when adding SnCl₂ (stannous chloride) in excess to a solution of HgCl₂ (mercurous chloride), we can follow these steps: ### Step 1: Identify the Reactants We have two reactants in this reaction: - SnCl₂ (stannous chloride) - HgCl₂ (mercurous chloride) ### Step 2: Understand the Reaction When SnCl₂ is added to HgCl₂, a chemical reaction occurs. The stannous chloride acts as a reducing agent and reduces the mercurous chloride. ### Step 3: Write the Reaction The balanced chemical equation for the reaction is: \[ \text{SnCl}_2 + \text{HgCl}_2 \rightarrow \text{SnCl}_4 + \text{Hg} \] ### Step 4: Identify the Products From the reaction, we can see that: - SnCl₄ (stannic chloride) is formed. - Hg (mercury) is produced as a solid. ### Step 5: Determine the Color of the Solid The mercury produced in this reaction is initially white in color. However, it can turn gray upon exposure to air due to oxidation. For the purpose of this question, we focus on the initial color of the solid mercury. ### Conclusion The color of the solid produced by adding SnCl₂ in excess to a solution of HgCl₂ is **white**.
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