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Why does dry HCI gas not change the colour of dry litmus paper? 
  • a)
    HCI gas acts as a dehydrating agent.
  • b)
    Blue litmus becomes dry in the presence of dry HCI gas.
  • c)
    No H3O+ ions are present. Litmus changes colour only in the presence of H3O+ ions.
  • d)
    More than one of the above
  • e)
    None of the above
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Why does dry HCI gas not change the colour of dry litmus paper?a)HCI g...


Explanation:

To understand why dry HCI gas does not change the color of dry litmus paper, we need to consider the properties of HCI gas and litmus paper.

No H3O+ ions are present:
- Litmus paper changes color in the presence of H3O+ ions, which is characteristic of acidic solutions.
- Dry HCI gas does not contain any free H3O+ ions as it is a covalent compound and does not dissociate in the absence of water.
- Therefore, without the presence of H3O+ ions, dry HCI gas cannot change the color of dry litmus paper.

In conclusion, the reason dry HCI gas does not change the color of dry litmus paper is that litmus changes color only in the presence of H3O+ ions, which are not present in dry HCI gas.
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Community Answer
Why does dry HCI gas not change the colour of dry litmus paper?a)HCI g...
The correct option is no H3O+ ions are present. Litmus changes color only in the presence of H3O+ ions.
  • Dry HCI gas does not change the color of dry litmus paper because no H3O+ ions are present.
  • Litmus changes color only in the presence of H3O+ ions.
  • Dry HCl is not able to dissociate to give Hydrogen ions. 
  • Acids like HCl is only able to dissociate only in an aqueous medium.
  • HCl is not aqueous and not the litmus paper is wet.
  • Thus, there is no color change in litmus paper.
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Why does dry HCI gas not change the colour of dry litmus paper?a)HCI gas acts as a dehydrating agent.b)Blue litmus becomes dry in the presence of dry HCI gas.c)No H3O+ ions are present. Litmus changes colour only in the presence of H3O+ ions.d)More than one of the abovee)None of the aboveCorrect answer is option 'C'. Can you explain this answer?
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Why does dry HCI gas not change the colour of dry litmus paper?a)HCI gas acts as a dehydrating agent.b)Blue litmus becomes dry in the presence of dry HCI gas.c)No H3O+ ions are present. Litmus changes colour only in the presence of H3O+ ions.d)More than one of the abovee)None of the aboveCorrect answer is option 'C'. Can you explain this answer? for BPSC (Bihar) 2024 is part of BPSC (Bihar) preparation. The Question and answers have been prepared according to the BPSC (Bihar) exam syllabus. Information about Why does dry HCI gas not change the colour of dry litmus paper?a)HCI gas acts as a dehydrating agent.b)Blue litmus becomes dry in the presence of dry HCI gas.c)No H3O+ ions are present. Litmus changes colour only in the presence of H3O+ ions.d)More than one of the abovee)None of the aboveCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for BPSC (Bihar) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why does dry HCI gas not change the colour of dry litmus paper?a)HCI gas acts as a dehydrating agent.b)Blue litmus becomes dry in the presence of dry HCI gas.c)No H3O+ ions are present. Litmus changes colour only in the presence of H3O+ ions.d)More than one of the abovee)None of the aboveCorrect answer is option 'C'. Can you explain this answer?.
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