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While tinning of brass utensils, the ammonium chloride powder used to clean the hot utensil produces fumes of
- a)ammonia
- b)carbon monoxide
- c)hydrochloric acid
- d)ammonia and hydrochloric acid
Correct answer is option 'D'. Can you explain this answer?
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While tinning of brass utensils, the ammonium chloride powder used to ...
It produces fumes of ammonia and hydrochloric acid.
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While tinning of brass utensils, the ammonium chloride powder used to ...
Understanding the Tinning Process
Tinning is a process where a layer of tin is applied to brass utensils to prevent corrosion. This process often involves cleaning the surface of the brass before applying the tin.
Role of Ammonium Chloride
- Ammonium chloride (NH4Cl) is commonly used as a flux in the tinning process.
- It helps to clean the brass surface by removing oxidation and impurities, allowing for better adhesion of the tin.
Production of Fumes
- When ammonium chloride is heated, it decomposes to produce ammonia (NH3) and hydrochloric acid (HCl) gases.
- This reaction occurs as follows:
- NH4Cl(s) → NH3(g) + HCl(g)
Why Ammonia and Hydrochloric Acid?
- The release of ammonia and hydrochloric acid is significant because:
- Ammonia is a basic gas that can react with acids.
- Hydrochloric acid is a strong acid that can react with metals, including brass.
Environmental and Safety Considerations
- The fumes produced can be irritating to the respiratory system and eyes.
- Proper ventilation and safety measures should be taken when performing tinning to avoid inhalation of these fumes.
Conclusion
In conclusion, the use of ammonium chloride in the tinning process results in the production of both ammonia and hydrochloric acid gases. This is critical to understand for both the effectiveness of the tinning process and for ensuring safety during its execution.
Tinning is a process where a layer of tin is applied to brass utensils to prevent corrosion. This process often involves cleaning the surface of the brass before applying the tin.
Role of Ammonium Chloride
- Ammonium chloride (NH4Cl) is commonly used as a flux in the tinning process.
- It helps to clean the brass surface by removing oxidation and impurities, allowing for better adhesion of the tin.
Production of Fumes
- When ammonium chloride is heated, it decomposes to produce ammonia (NH3) and hydrochloric acid (HCl) gases.
- This reaction occurs as follows:
- NH4Cl(s) → NH3(g) + HCl(g)
Why Ammonia and Hydrochloric Acid?
- The release of ammonia and hydrochloric acid is significant because:
- Ammonia is a basic gas that can react with acids.
- Hydrochloric acid is a strong acid that can react with metals, including brass.
Environmental and Safety Considerations
- The fumes produced can be irritating to the respiratory system and eyes.
- Proper ventilation and safety measures should be taken when performing tinning to avoid inhalation of these fumes.
Conclusion
In conclusion, the use of ammonium chloride in the tinning process results in the production of both ammonia and hydrochloric acid gases. This is critical to understand for both the effectiveness of the tinning process and for ensuring safety during its execution.
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While tinning of brass utensils, the ammonium chloride powder used to clean the hot utensil produces fumes ofa)ammoniab)carbon monoxidec)hydrochloric acidd)ammonia and hydrochloric acidCorrect answer is option 'D'. Can you explain this answer?
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