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A white substance (A) reacts with dilute H2SO4 to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7 solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3 or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case
(B) and (D) are respectively
(B) and (D) are respectively
- a)SO2 and SnSO4
- b)SO2 and Al2 (SO4)3
- c)H2S and BeS
- d)H2S and S
Correct answer is option 'D'. Can you explain this answer?
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A white substance (A) reacts with dilute H2SO4to produce a colourless ...
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A white substance (A) reacts with dilute H2SO4to produce a colourless ...
Overview of the Reaction
The given reactions involve a sequence of chemical transformations that ultimately lead to the identification of the substances A, B, C, and D.
Identification of Substances
- Substance A: The white substance that reacts with dilute H2SO4 to produce a colorless gas (B) and a colorless solution (C). Given the context, A is likely to be a sulfide, specifically zinc sulfide (ZnS), which reacts with dilute sulfuric acid to produce hydrogen sulfide (H2S) gas (B) and zinc sulfate (ZnSO4) solution (C).
- Gas B (H2S): Hydrogen sulfide is a colorless gas with a distinctive smell. When B (H2S) reacts with acidified K2Cr2O7, it gets oxidized to sulfur, resulting in a green solution of chromium(III) sulfate and a precipitate of sulfur (D).
Behavior of Precipitate D
- Precipitate D (S): The slightly colored precipitate formed is sulfur. Sulfur burns in air to produce sulfur dioxide (E).
Reaction Between E and B
- Gas E (SO2): The sulfur dioxide produced reacts with hydrogen sulfide to regenerate sulfur (D) and produces a colorless liquid, which is water (H2O).
Final Observations
- Color Change with Copper Sulfate: Anhydrous copper sulfate turns blue upon addition of water, confirming that the colorless liquid produced is indeed water.
- Precipitate Formation with C: When aqueous NH3 or NaOH is added to the colorless solution (C, ZnSO4), a precipitate of zinc hydroxide forms, which dissolves in excess reagent, demonstrating the amphoteric nature of zinc compounds.
Conclusion
Thus, the correct identification is:
- (B) is H2S
- (D) is S
Hence, the answer is option 'D': H2S and S.
The given reactions involve a sequence of chemical transformations that ultimately lead to the identification of the substances A, B, C, and D.
Identification of Substances
- Substance A: The white substance that reacts with dilute H2SO4 to produce a colorless gas (B) and a colorless solution (C). Given the context, A is likely to be a sulfide, specifically zinc sulfide (ZnS), which reacts with dilute sulfuric acid to produce hydrogen sulfide (H2S) gas (B) and zinc sulfate (ZnSO4) solution (C).
- Gas B (H2S): Hydrogen sulfide is a colorless gas with a distinctive smell. When B (H2S) reacts with acidified K2Cr2O7, it gets oxidized to sulfur, resulting in a green solution of chromium(III) sulfate and a precipitate of sulfur (D).
Behavior of Precipitate D
- Precipitate D (S): The slightly colored precipitate formed is sulfur. Sulfur burns in air to produce sulfur dioxide (E).
Reaction Between E and B
- Gas E (SO2): The sulfur dioxide produced reacts with hydrogen sulfide to regenerate sulfur (D) and produces a colorless liquid, which is water (H2O).
Final Observations
- Color Change with Copper Sulfate: Anhydrous copper sulfate turns blue upon addition of water, confirming that the colorless liquid produced is indeed water.
- Precipitate Formation with C: When aqueous NH3 or NaOH is added to the colorless solution (C, ZnSO4), a precipitate of zinc hydroxide forms, which dissolves in excess reagent, demonstrating the amphoteric nature of zinc compounds.
Conclusion
Thus, the correct identification is:
- (B) is H2S
- (D) is S
Hence, the answer is option 'D': H2S and S.
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A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer?
Question Description
A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer?.
A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer?.
Solutions for A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A white substance (A) reacts with dilute H2SO4to produce a colourless gas (B) and a colourless solution (C). The reaction between (B) and acidified K2Cr2O7solution produces a green solution and a slightly coloured precipitate (D). The substance (D) burns in air to produce a gas (E), which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous NH3or NaOH to (C) produces first a precipitate which dissolves in the excess of the respective reagent to produce a clear solution in each case(B) and (D) are respectivelya)SO2and SnSO4b)SO2and Al2(SO4)3c)H2S and BeSd)H2S and SCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice JEE tests.
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