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A gas X with disagreeable odour reduces silver nitrate solution to give metallic silver and is itself oxidised to Y. Y is a dibasic acid with reducing properties. It is slowly oxidised in air to a tribasic acid Z. Though Z is a tribasic acid, it behaves in aqueous solution mostly as a dibasic acid. When a mixture of X and N2O is subjected to electric spark, Z is obtained.
The gas X is
  • a)
    ammonia
  • b)
    phosphine
  • c)
    hydrogen sulphide
  • d)
    sulphur dioxide
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A gas X with disagreeable odour reduces silver nitrate solution to gi...
Gas X is Phosphine (PH3)
Phosphine is a gas that has a disagreeable odor and can reduce silver nitrate to produce metallic silver. When it reacts with air, it is oxidized to a dibasic acid called Y. Y has reducing properties and slowly oxidizes in air to become a tribasic acid called Z. Even though Z is a tribasic acid, it behaves mostly as a dibasic acid in aqueous solution. When a mixture of X and N2O is subjected to an electric spark, Z is obtained.

Explanation:
Gas X is Phosphine (PH3) because it has a disagreeable odor and can reduce silver nitrate to produce metallic silver. This reaction is specific to phosphine, and no other gas can perform this reaction.

When phosphine reacts with air, it is oxidized to form a dibasic acid called Y. This is because phosphine has a reducing property, meaning it can donate electrons to other molecules in a reaction. As it is oxidized, it loses electrons and becomes a dibasic acid.

Y has reducing properties and slowly oxidizes in air to become a tribasic acid called Z. This is because Y can donate electrons to other molecules, making it a reducing agent. However, when it reacts with air, it loses its reducing properties and becomes a tribasic acid.

Even though Z is a tribasic acid, it behaves mostly as a dibasic acid in aqueous solution. This is because the third hydrogen ion in Z is difficult to remove due to its structure. Therefore, Z behaves as a dibasic acid in most reactions.

When a mixture of X and N2O is subjected to an electric spark, Z is obtained. This is because the electric spark provides the energy needed to oxidize X to Y and then to Z. N2O acts as an oxidizing agent, helping to convert X to Y and then to Z.

In conclusion, gas X is Phosphine (PH3), and it can reduce silver nitrate to produce metallic silver. When it reacts with air, it is oxidized to form a dibasic acid called Y, which slowly oxidizes to become a tribasic acid called Z. Even though Z is a tribasic acid, it behaves mostly as a dibasic acid in aqueous solution. When a mixture of X and N2O is subjected to an electric spark, Z is obtained.
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Community Answer
A gas X with disagreeable odour reduces silver nitrate solution to gi...
Phosphine is a gas with disagreeable odour of rotten fish. It can reduce silver nitrate solution to metallic silver and is itself oxidised to H3PO3, a dibasic acid with reducing properties.
6AgNO3 + PH3 + 3H2O → 6Ag + H3PO3 + 6HNO3
Thus, option (b) is correct.
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A gas X with disagreeable odour reduces silver nitrate solution to give metallic silver and is itself oxidised to Y. Y is a dibasic acid with reducing properties. It is slowly oxidised in air to a tribasic acid Z. Though Z is a tribasic acid, it behaves in aqueous solution mostly as a dibasic acid. When a mixture of X and N2O is subjected to electric spark, Z is obtained.The gas X isa)ammoniab)phosphinec)hydrogen sulphided)sulphur dioxideCorrect answer is option 'B'. Can you explain this answer?
Question Description
A gas X with disagreeable odour reduces silver nitrate solution to give metallic silver and is itself oxidised to Y. Y is a dibasic acid with reducing properties. It is slowly oxidised in air to a tribasic acid Z. Though Z is a tribasic acid, it behaves in aqueous solution mostly as a dibasic acid. When a mixture of X and N2O is subjected to electric spark, Z is obtained.The gas X isa)ammoniab)phosphinec)hydrogen sulphided)sulphur dioxideCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A gas X with disagreeable odour reduces silver nitrate solution to give metallic silver and is itself oxidised to Y. Y is a dibasic acid with reducing properties. It is slowly oxidised in air to a tribasic acid Z. Though Z is a tribasic acid, it behaves in aqueous solution mostly as a dibasic acid. When a mixture of X and N2O is subjected to electric spark, Z is obtained.The gas X isa)ammoniab)phosphinec)hydrogen sulphided)sulphur dioxideCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A gas X with disagreeable odour reduces silver nitrate solution to give metallic silver and is itself oxidised to Y. Y is a dibasic acid with reducing properties. It is slowly oxidised in air to a tribasic acid Z. Though Z is a tribasic acid, it behaves in aqueous solution mostly as a dibasic acid. When a mixture of X and N2O is subjected to electric spark, Z is obtained.The gas X isa)ammoniab)phosphinec)hydrogen sulphided)sulphur dioxideCorrect answer is option 'B'. Can you explain this answer?.
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