Brass gets discoloured in air because of the presence of which of the following gases in air?a)Oxygenb)Hydrogen Sulphidec)Carbon dioxided)NitrogenCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Hey mate!Here's your answer!!

▪Brass gets discolored in air because of the presence of Hydrogen sulphide

●Reason :- It is because the presence of mixture of hydrogen and sulphide and brass is a type of thing which has a color very light and mixture is non temperature (hot and cold type of temperature) so it gets discolored.

■Hope it helps you!!.....if u like it then please upvote...and enjoy ur study.......hey sorry gyess....sach bolu to mainai quora ka help sai snswer diya hai.

Answer

Understanding Brass Discoloration
Brass is an alloy composed mainly of copper and zinc. While it is valued for its appearance and durability, it can undergo discoloration when exposed to certain environmental conditions.
Role of Gases in Discoloration
- The primary gas responsible for the discoloration of brass is Hydrogen Sulfide (H2S).
- Hydrogen sulfide is a colorless gas with a characteristic smell of rotten eggs, and it is commonly found in polluted air, particularly near industrial areas or places with sulfur-containing compounds.
Chemical Reaction
- When brass is exposed to hydrogen sulfide, a chemical reaction occurs:
- The copper in brass reacts with hydrogen sulfide to form copper sulfide, which appears as a dark tarnish on the surface.
- This tarnishing diminishes the aesthetic appeal of brass items, leading to the necessity for cleaning and maintenance.
Other Gases and Their Effects
- Oxygen: While oxygen can cause oxidation of metals, it does not significantly tarnish brass compared to hydrogen sulfide.
- Carbon Dioxide: This gas does not react with brass and thus does not contribute to discoloration.
- Nitrogen: Being an inert gas, nitrogen does not affect brass at all.
Conclusion
- In summary, brass gets discolored primarily due to the presence of Hydrogen Sulfide in the air, leading to tarnishing and requiring regular upkeep to maintain its luster. Understanding this reaction helps in better maintenance and care of brass items.

Answer

Brass gets discolored in air because of the presence of Hydrogen sulphide

It is because the presence of mixture of hydrogen and sulphide and brass is a type of thing which has a color very light and mixture is non temperature (hot and cold type of temperature) so it gets discolored.

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