[Yoritomo]

Hello!


   I'd like to ask ifthe presence of a salt that gives basic solution in a room will turn the humidity of atmosphere alkalik.if,for instance,a box full of Sodium Bicarbonate is opened in a room,does this mean that the pH of the humidity in the room is alkali?


Thanks a lot in advance!

[AWK]

It depends on the atmoshere of your room. Sodium bicarbonate does not absorb carbon dioxide, but reacts with sulfur oxides, nitrogen dioxide, hydrogen chloride and so on.

[Yoritomo]

Thank you for your answer!

       I do not completely understand.In which case will the humidity be alkali?

      I guess that in presence of fumes of acid the atmosphere will be neutralized(depending on appropriate concentrations).

      Please,can you name a few sources of the oxides you mention?


       Thanks a lot!

[Borek]

Humidity can't be alkalic nor acidic.

[Yoritomo]

Hello!

Thank you for your reply!

     Am I using wrong terminology?Excuse me if this is right!

     Can atmosphere be acidic or alkali?

     Will it be alkalic when sodium bicarbonate is exposed in crystal form or solution?


       Thank you,your help is very appreciated!

[vmelkon]

Hello!

Thank you for your reply!

     Am I using wrong terminology?Excuse me if this is right!

     Can atmosphere be acidic or alkali?

     Will it be alkalic when sodium bicarbonate is exposed in crystal form or solution?


       Thank you,your help is very appreciated!

Ordinary salt and any other salt does not dissolve in air.

[Yoritomo]

Will the sodium bicarbonate crystals form hydroxide in the air?

 Please excuse me for using wrong terminology and asking probably obvious questions!I highly appreciate your help and your patience!

Thanks!

[Borek]

Your questions doesn't make sense.

pH is a concept related to the water solution, there is no such thing as pH of a gas. Air can't be alkalic nor acidic. Humidity can't be alkalic nor acidic, as humidity means gaseous water. Gaseous, not liquid, so no pH.

Could be you are asking about aerosol, that's the only way your questions may make sense, but I am not going to venture a guess.

Please elaborate on what you mean. As of now your question can't be understood nor answered.

[Yoritomo]

I guessed that it's a matter of terminology.

Here's what I imagine:
Crystals of sodium bicarbonate are exposed to air.In the air there is gaseous water.The molecules of water which are in close contact with the molecules of the crystals are ionized.Hydrogen is attracted by the crystals and free hydroxide remains in the air.Free hydroxide reacts with other compounds present in the room.

I hope this makes sense.The question is:

Does this happen,or my suggestion is wrong?

Thank you very much!

[Borek]

No, you are wrong. You may safely assume there are no ions floating in the air. Especially no OH^- or H⁺ ions. All water molecules in gaseous state are neutral.

[Yoritomo]

I get it!

Thank you and excuse me again!