Question

why does dry hcl gas not change the color of the dry litmus paper​

Answer 1

Answer:

In case of dry HCl gas, there is no presence of water and so, the dye on litmus paper cannot react with the gas. So, any dry gas will not give any change in the colour of litmus paper.

Answer 2

Answer:

Listen, When HCL is in Dry form..it unable to dissociate it's ions in H+ ion which is hydrogen..

And we know that power of hydrogen (PH) is required to detect that the substance is Acid or Base which responsible for colour change in a litmus paper.

Explanation:

SO,

In the absence H+ ion in HCL compound, pH paper unable to detect and hence there is no change in colour of the litmus paper occurred.

• To have free ions from compounds, we have to add water into the compound we have!