Heat of Dilution - Hydrocholric Acid
Heat of Dilution - Hydrocholric Acid
(OP)
Hello,
Anyone have a good procedure or calculation method for calculating the heat generated from adding water to 37% by weight Hydrochloric Acid. I've seen the enthalpy-concentration diagram in Perry's but don't have much experience with this.
For example the heat rise of adding 100 gallons of water to 200 gallons of 37% by weight HCL.
Thanks.
Anyone have a good procedure or calculation method for calculating the heat generated from adding water to 37% by weight Hydrochloric Acid. I've seen the enthalpy-concentration diagram in Perry's but don't have much experience with this.
For example the heat rise of adding 100 gallons of water to 200 gallons of 37% by weight HCL.
Thanks.





RE: Heat of Dilution - Hydrocholric Acid
just a quick answer, sorry about the outdated units.
Heat of Solution for 1kg HCl:
acid concentration
[weight-%]
0.1% 485 kcal
25% 427 kcal
30% 408 kcal
35% 392 kcal
40% 374 kcal
Kind Regards,
hahor
RE: Heat of Dilution - Hydrocholric Acid
So if I have 100 kg of 40% by weight HCL (40 kg HCL) and dilute it to 25% HCL, from your chart I would get a heat generation of:
(427-374)*40 = 2120 kcal.
Correct?
RE: Heat of Dilution - Hydrocholric Acid
you are right.
Kind Regards,
hahor