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Hydrogen sulphide reacts with lead acetate forming a black compound which reacts with hydrogen peroxide to form another compound. The colour of the compound is
- a)Pink
- b)White
- c)Black
- d)Yellow
Correct answer is option 'B'. Can you explain this answer?
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Hydrogen sulphide reacts with lead acetate forming a black compound wh...
PbS + H2O2 → PbSo4(white) + H2O
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Hydrogen sulphide reacts with lead acetate forming a black compound wh...
The compound formed when hydrogen sulphide reacts with lead acetate is black in color. However, when this black compound reacts with hydrogen peroxide, it forms another compound which is white in color.
Explanation:
1. Reaction of Hydrogen Sulphide with Lead Acetate:
- Hydrogen sulphide (H2S) is a gas with a characteristic rotten egg smell.
- When hydrogen sulphide gas is passed through a solution of lead acetate (Pb(CH3COO)2), a reaction occurs.
- The hydrogen sulphide gas reacts with lead acetate to form a solid compound called lead sulphide (PbS).
- Lead sulphide is a black compound, hence the black color observed.
2. Reaction of Lead Sulphide with Hydrogen Peroxide:
- Lead sulphide (PbS) is an insoluble compound and does not easily react with other substances.
- However, when lead sulphide is treated with hydrogen peroxide (H2O2), a reaction takes place.
- The lead sulphide reacts with hydrogen peroxide to form lead dioxide (PbO2).
- Lead dioxide is a white compound, hence the white color observed.
In summary, the reaction sequence can be represented as follows:
Hydrogen Sulphide + Lead Acetate -> Lead Sulphide (black compound)
Lead Sulphide + Hydrogen Peroxide -> Lead Dioxide (white compound)
Therefore, the compound formed when hydrogen sulphide reacts with lead acetate is black, but the compound formed when the black compound reacts with hydrogen peroxide is white.
Explanation:
1. Reaction of Hydrogen Sulphide with Lead Acetate:
- Hydrogen sulphide (H2S) is a gas with a characteristic rotten egg smell.
- When hydrogen sulphide gas is passed through a solution of lead acetate (Pb(CH3COO)2), a reaction occurs.
- The hydrogen sulphide gas reacts with lead acetate to form a solid compound called lead sulphide (PbS).
- Lead sulphide is a black compound, hence the black color observed.
2. Reaction of Lead Sulphide with Hydrogen Peroxide:
- Lead sulphide (PbS) is an insoluble compound and does not easily react with other substances.
- However, when lead sulphide is treated with hydrogen peroxide (H2O2), a reaction takes place.
- The lead sulphide reacts with hydrogen peroxide to form lead dioxide (PbO2).
- Lead dioxide is a white compound, hence the white color observed.
In summary, the reaction sequence can be represented as follows:
Hydrogen Sulphide + Lead Acetate -> Lead Sulphide (black compound)
Lead Sulphide + Hydrogen Peroxide -> Lead Dioxide (white compound)
Therefore, the compound formed when hydrogen sulphide reacts with lead acetate is black, but the compound formed when the black compound reacts with hydrogen peroxide is white.
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Hydrogen sulphide reacts with lead acetate forming a black compound which reacts with hydrogen peroxide to form another compound. The colour of the compound isa)Pinkb)Whitec)Blackd)YellowCorrect answer is option 'B'. Can you explain this answer?
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