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Which of the following substance is reduced in the given reaction below?
PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2O
PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2O
- a)Lead sulphide
- b)Hydrogen peroxide
- c)Both lead sulphide and Hydrogen peroxide
- d)Water
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following substance is reduced in the given reaction belo...
Understanding the Reaction
In the reaction:
PbS(s) + 4H2O2(aq) → PbSO4(s) + 4H2O,
we need to identify which substance is reduced.
Reduction Process
- Definition of Reduction: Reduction is a chemical reaction that involves the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
Analyzing Hydrogen Peroxide
- Hydrogen Peroxide (H2O2): In this reaction, H2O2 acts as an oxidizing agent. It is known to undergo reduction during the reaction.
- Oxidation State Change: The oxidation state of oxygen in H2O2 is -1, and in water (H2O), it is -2. This change indicates that H2O2 is gaining electrons and being reduced.
Analyzing Lead Sulfide
- Lead Sulfide (PbS): In this reaction, PbS is converted to PbSO4.
- Oxidation State Change: Lead (Pb) in PbS has an oxidation state of +2 in PbSO4, but the lead does not gain electrons. Instead, it is oxidized.
Conclusion
- Final Identification: Since H2O2 is reduced (gaining electrons) and PbS is oxidized (losing electrons), the correct answer is indeed b) Hydrogen peroxide.
Thus, understanding the changes in oxidation states helps clarify the reduction process in this reaction.
In the reaction:
PbS(s) + 4H2O2(aq) → PbSO4(s) + 4H2O,
we need to identify which substance is reduced.
Reduction Process
- Definition of Reduction: Reduction is a chemical reaction that involves the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
Analyzing Hydrogen Peroxide
- Hydrogen Peroxide (H2O2): In this reaction, H2O2 acts as an oxidizing agent. It is known to undergo reduction during the reaction.
- Oxidation State Change: The oxidation state of oxygen in H2O2 is -1, and in water (H2O), it is -2. This change indicates that H2O2 is gaining electrons and being reduced.
Analyzing Lead Sulfide
- Lead Sulfide (PbS): In this reaction, PbS is converted to PbSO4.
- Oxidation State Change: Lead (Pb) in PbS has an oxidation state of +2 in PbSO4, but the lead does not gain electrons. Instead, it is oxidized.
Conclusion
- Final Identification: Since H2O2 is reduced (gaining electrons) and PbS is oxidized (losing electrons), the correct answer is indeed b) Hydrogen peroxide.
Thus, understanding the changes in oxidation states helps clarify the reduction process in this reaction.
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Community Answer
Which of the following substance is reduced in the given reaction belo...
Oxidised: PbS: The oxidation number of S increases from -2 to +6. Thus, S itself is oxidised and acts as reducing agent.
Reduced: H2O2: The oxidation number of O decreases from -1 to -2. Thus, O itself is reduced and acts as oxidising agent.
Reduced: H2O2: The oxidation number of O decreases from -1 to -2. Thus, O itself is reduced and acts as oxidising agent.
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Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer?.
Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer?.
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Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Which of the following substance is reduced in the given reaction below?PbS(s) + 4H2O2 (aq) → PbSO4(s) + 4H2Oa)Lead sulphideb)Hydrogen peroxidec)Both lead sulphide and Hydrogen peroxided)WaterCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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