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A one litre flask is full of brown bromi...

A one litre flask is full of brown bromine vapour. The intensity of brown colour of vapour will not decreases appreciably on adding to the flask some

A

pieces of marble

B

animal charcoal powder

C

carbon tetrachloride

D

carbon disulphide

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to determine which of the given substances will not react with bromine vapor (Br2) and thus will not affect the intensity of its brown color when added to the flask. ### Step-by-Step Solution: 1. **Understanding the Problem:** We have a one-liter flask filled with brown bromine vapor. The question asks which substance, when added, will not significantly decrease the intensity of the brown color. 2. **Identifying the Substances:** The options provided are: - A) Pieces of marble - B) Animal charcoal powder - C) Carbon tetrachloride - D) Carbon disulfide 3. **Analyzing Each Option:** - **A) Pieces of marble (Calcium Carbonate, CaCO3):** This compound does not react with bromine. Therefore, adding it to the flask will not change the intensity of the brown color. - **B) Animal charcoal powder:** This is a form of carbon that can adsorb bromine, thus potentially reducing the intensity of the brown color. - **C) Carbon tetrachloride (CCl4):** This compound can dissolve bromine and may lead to a decrease in the observed color intensity. - **D) Carbon disulfide (CS2):** This solvent can also dissolve bromine and will likely reduce the intensity of the brown color. 4. **Conclusion:** Since pieces of marble (calcium carbonate) do not react with bromine, adding them to the flask will not appreciably decrease the intensity of the brown color of the vapor. Therefore, the correct answer is: - **A) Pieces of marble.** ### Final Answer: **A) Pieces of marble**
To solve the problem, we need to determine which of the given substances will not react with bromine vapor (Br2) and thus will not affect the intensity of its brown color when added to the flask. ### Step-by-Step Solution: 1. **Understanding the Problem:** We have a one-liter flask filled with brown bromine vapor. The question asks which substance, when added, will not significantly decrease the intensity of the brown color. 2. **Identifying the Substances:** ...
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