Page:Outlines of Physical Chemistry - 1899.djvu/189

 HEAT OF FORMATION

��Cabbohtdrates

��Name

�Formula

�Heat of Forma- i tion in the i solid state

302-6 !

�Heat of Combustion

�Dextrose.

�1 677-2 Cal.

�Fructose (levulose).

�id.

�675-9 „

�Galactose

�id.

�669-9 „

�Saccharose

� �C^jjH^O, ,

�! 1,3550 „

�Lactose.

� �id.

�1 1,351-4 „

�Maltose.

� �id.

�1,350-7 „

�Dextrin.

� �(C 6 H 10 O 5 ) n

�». 667-2 „

�Starch

� �id.

�I n. 684-9 „

�Cellulose.

� �id.

�| ». 680-4 „

�Glycogen.

� �id.

�' n. 678-9 „

i

��The mean value for the heat of combustion of a quan- tity of the substances containing 1 gram of carbon may be taken as 9*4 Cal.

Natubal Fats. — It has been found that the combus- tion of one gram of animal fat or vegetable oil evolves on the average 9*5 Calories ; in the case of butter, 9*28 Cal.

The combustion of a quantity of fat containing one gram of carbon evolves 12*4 Cal.

Albuminoids

��Egg albumen.

Fibrin.

Fat-extracted flesh

Haemoglobin

Casein

Egg-yolk (with 7 per

cent, of nitrogen) Gluten Peptone.

Average

��Heat of Combustion

��Of one

gram of

substance

��Of a quantity

containing

one gram of

carbon

��Heat of Formation

��Of one

gram of

substance

��Of a quantity

containing

one gram of

carbon

��1-689 Cal.

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