Do all Journal have 200 pages?
Yes all three sizes have 200 pages front back counting.
Is the paper acid free? I would like to know if the paper is in danger of yellowing over time.
This Paper is acid free . Doesn't get yellow with time .
Is the paper think enough from liquid ink or water paints?
Yes the gsm is 175 . Handmade paper thick enough for watercolors .
I’ve seen a comments about a “chemical smell.” I have really severe asthma, so I need to know to know if fades away over time.
There is no chemical smell just the leather scent which is very obvious to the leather products. Be assure there is no chemical smell .