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Heat of Dilution

Heat of Dilution

Heat of Dilution

(OP)
Can anyone tell me whether diluting nitric acid in water from 13m to 3m is an exothermic process and most importantly if so by how much?
I understand this is a slightly chemistryish question but I've tried Perry's and searched the internet but I can't find an answer anywhere.

RE: Heat of Dilution


The CRC Handbook of Chemistry and Physics may be of help.

RE: Heat of Dilution

At 10°C
Enthalpy per mole of HNO3

0.5 mol H2O -2.02 kcal/molHNO3  
1   -3.32
2   -4.89
5   -6.81
10  -7.31
100 -7.21

be careful  data is more than 100 years old. I extracted this data from Landolt Bornstein (1976) but actual data is much older. I have not checked whether it's plausible or not.
 

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