[Histonet] Simple (?) equation question

[jstaruk]

Hello,

I want to make a 2% HCl and 8% formic acid decalcifying solution.  Since
straight HCl is 37%, do I treat this as 100% (like you do using formalin),
so the formula will simply be 98 water and 2 HCl or do I have to fraction it
out so a 2% solution will actually be 95 water to 5 HCl?

Also, the same question is for the formic acid, which is actually 88%

My choices to make a 2% HCl and 8% formic acid solutions is either:

A) 2 HCl, 8 formic acid and 90 water

Or

B) 5 HCl, 8.8 formic acid and 86.2 water 


Thanks

Jim