Class 7 Exam > Class 7 Questions > Dry HCl gas do not change the colour of dry l...
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Dry HCl gas do not change the colour of dry litmus paper because
- a)Hydrogen gas is evolved only in presence of water
- b)Hydrogen ion is produced in aqueous condition
- c)Acids shows acidic property due to water
- d)Water provide acidic characters
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Dry HCl gas do not change the colour of dry litmus paper becausea)Hydr...
The colour of litmus paper changes only in the presence of ions like hydrogen (H+) or hydronium (H3O+) ions. HCl can produce these ions only in the form of aqueous solution. Hence dry HCl gas does not change the colour of dry litmus paper.
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Most Upvoted Answer
Dry HCl gas do not change the colour of dry litmus paper becausea)Hydr...
The hydrogen ion are only produce in aqueous solution only that change the color of blue litmus. any one the litmus or HCl should be wet to disassociate hydro ion to change the color of litmus.HOPE HELP U TO FIND YOUR SOLUTION.
Community Answer
Dry HCl gas do not change the colour of dry litmus paper becausea)Hydr...
Explanation:
Hydrogen ion is produced in aqueous condition:
- Dry HCl gas does not change the color of dry litmus paper because acids exhibit their acidic properties when they are dissolved in water.
- In the presence of water, hydrogen chloride (HCl) gas dissolves to form hydrochloric acid (HCl) which produces hydrogen ions (H+) in aqueous solution.
- These hydrogen ions are responsible for the acidic properties of the acid, which can be detected using indicators like litmus paper.
- Since dry HCl gas does not contain water, it does not produce hydrogen ions and therefore does not change the color of litmus paper.
Therefore, the correct explanation for why dry HCl gas does not change the color of dry litmus paper is that hydrogen ions are produced in aqueous conditions, and in the absence of water, the acid cannot exhibit its acidic properties.
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Dry HCl gas do not change the colour of dry litmus paper becausea)Hydrogen gas is evolved only in presence of waterb)Hydrogen ion is produced in aqueous conditionc)Acids shows acidic property due to waterd)Water provide acidic charactersCorrect answer is option 'B'. Can you explain this answer?
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