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Why a dry blue litmus paper is not affected by hydrogen chloride gas or hcl acid?
Wiki User
∙ 13y ago
The change of colour is due to chemical reaction. Almost all chemical reactions take place in solution. So dry litmus paper not shown any change in colour with hydrogen chloride gas. The colour changes only when the paper is dipped in water. In other word the paper is wet.
Added:
To be more precise:
Hydrogen chloride gas, when dry, is not an acid. Without water it can not donate protons to litmus, so this will not change color
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoBecause the HCl gas does not dissociate to give up H+ and Cl- ions.
But, in aqueous solutions HCl does dissociate and exist in ionic form.
In solution there is an equilibrium going on between the ionized and unionized form of the litmus indicator molecules. I.e. a loss of or gain on H+. It is this that causes the litmus to change colour depending on the H+ & -OH concentration in solution.
But, again, this does not happen in dry environment.
Remember an acid increases the hydronium ion concentration of solution. pH = -log[H30+].
Wiki User
∙ 13y agoHydrogen chloride, when dry is not an acid. Without water it can not donate protons to litmus, so this will not change color.
However when in solution like HCl acid (hydrochloric acid, muratic acid) it will react as acid coloring blue litmus to red.
Ravi Mishra
So2 gas show acidic property when it react with water and acid can change the colour of litmus paper but here there is no water molecule that is the reason so2 gas has no effect on dry litmus paper.
Wiki User
∙ 13y agoHydrogen chloride gas, when dry, is not an acid. Without water it can not donate protons to litmus, so this will not change color.
Wiki User
∙ 12y agobecause it does not free electrons to react
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Why a dry blue litmus paper is not affected by hydrogen chloride gas?
AS HCL DONATE ELECTRON IT HAS NO EFFECT ON DRY LITMUS PAPERType your answer here...
Why does dry HCl gas does not change the colour of the dry litmus paper?
Hydrogen chloride gas is not an acid, is not in solution and does not donate protons. So, no litmus paper color change.
What colour does litmus paper turn in sodium chloride acid?
- sodium chloride is not an acid - in an acid solution the blue litmus paper become red
If HCL is in contact with dry blue litmus paper will it change?
No: Hydrogen chloride gas, when dry, is notan acid. Without water it can not donate protons to litmus, so this will not change color.yes because HCL is a very very very strong acid and will turn blue litmus paper red
What happens when blue litmus paper is dipped in dilute nitric acid?
this is a fun expierement cuz it will turn the blue litmus paper into red litmus paper!
Why a dry blue litmus paper is not affected by hydrogen chloride gas?
AS HCL DONATE ELECTRON IT HAS NO EFFECT ON DRY LITMUS PAPERType your answer here...
What color does hydrogen chloride turn damp litmus paper?
turns blue litmus paper red
Why does dry HCl gas does not change the colour of the dry litmus paper?
Hydrogen chloride gas is not an acid, is not in solution and does not donate protons. So, no litmus paper color change.
Does hydrogen peroxide turns litmus paper blue or red?
hydrogen peroxide turns litmus paper into blue.
What colour does litmus paper turn in sodium chloride acid?
- sodium chloride is not an acid - in an acid solution the blue litmus paper become red
Which solution will not have any effect on both red litmus paper and blue litmus paper?
a)sulfur dioxide b)hydrogen chloride c)potassium sulfate d)slaked lime
What gas is produced when moist blue litmus turn red?
Hydrogen chloride, HCl gas, making hydrochloric ACID with wet litmus paper.Wet litmus paper can be used to test water-soluble gases; the gas dissolves in the water and the resulting solution colors the litmus paper. For instance, ammonia gas, NH3 which is alkaline, colors the litmus paper blue. Acidicgases turn it red.
What color does sodium chloride give on litmus paper?
Sodium chloride solution is neutral.
If HCL is in contact with dry blue litmus paper will it change?
No: Hydrogen chloride gas, when dry, is notan acid. Without water it can not donate protons to litmus, so this will not change color.yes because HCL is a very very very strong acid and will turn blue litmus paper red
What happens when blue litmus paper is dipped in dilute nitric acid?
this is a fun expierement cuz it will turn the blue litmus paper into red litmus paper!
What is the reaction with litmus paper after boiling the water and ferric chloride mixture?
The Blue Litmus paper will turn into Red, while the Red litmus paper will retain its color. So it only indicates that the said mixture is an acid.
What are the constituents of litmus paper?
Litmus is a mixture, not a single compound.
