Page:Outlines of Physical Chemistry - 1899.djvu/177

 HEAT OF NEUTRALISATION

��The table given, taken from BertheloVs ' Essai de m6- canique chimique,' shows the heat of neutralisation of a number of bases and acids. The heats are expressed in large calories.

���NaOH. KOH NH,

£CaO>.

£BaO».

£SrO».

£MgO.


 * MnO.

£FeO.

£NiO.


 * CoO.

§CdO.

JZnO.

iPbO {

£CuO

fHgO

jAl^O,

^Fe 2 O s

>Cr 2 O s

��a a W

��!

Pa

(cryst allise

��•"J

��d)

I*

��8°

a

go

��§.a

goo ootfl

��W

��Do

��1 The hydrates dissolved in 25, 6, and 10 litres of water respectively. The following oxides are taken as more or less hydrated precipitates.

��Conditions of the Calorimetric Experiment.— Alkaline bases are dissolved in two litres of water for each equivalent of base ; for the bases of the alkaline earths a much larger proportion of water is taken. One equivalent of acid is dissolved in the quantity of water denoted in the table for acting on the soluble bases, and in at least four

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