74 THERMO-CHEMISTRY. 



Sodium sulphide (Na 2 + S)s 88*4 



Strontium sulphide (Sr + S)s 952 



Zinc sulphide (Zn + S)s 43 



(98) FORMATION OF HYDRATES FROM LIQUID WATER (see 90). 



Hydrogen nitrate (HN0 3 Z + H 2 0) ............... . .............. 10'6 



,, (HN(y + wH 2 0) .............................. 14-4 



sulphate (S0 3 s + H 2 0)s .............................. 21-2 



(H 2 S0 4 + H 2 0)Z .............................. 6-2 



(H 2 S0 4 + nli 2 0)l ............................ 17 



,, iodate (I 2 5 s + H 2 0)s .................................. 3 



phosphate (P 2 5 s + 3 H 2 0)s ........................... 33'8 



arsenate (As 2 5 s + 3H 2 0)s ...................... '. ..... 6 "8 



borate (B 2 3 + 3H 2 0)s ................................ 16'8 



Potassium hydrate (K 2 + H 2 0)s ................................. 42'4 



(KHO + wH 2 0)Z .............................. 12 5 



Sodium hydrate (Na 2 + H 2 0)s ................................ 35 '6 



(NaHO + nR 2 0)l .............................. 9'8 



Barium hydrate (BaO + H 2 0)s .................................... 17'6 



dioxide (Ba0 2 + H 2 0),9 .................................. 2'8 



hydrate (BaH 2 2 + 7iH 2 0)Z ............................. 10'2 



Strontium hydrate (SrO + H 2 0)6' ................................. 17'2 



(SrH a 2 + 9H 2 0) ........................... 18'2 



Calcium hydrate (CaO + H 2 0)s .................................. 15'1 



Leadhydrate (PbO + H 2 0)5 ....................................... 2'4 



Potassium sulphate (K 2 S0 4 + H 2 0)s ........................... 10 



Ammonia (NH 3 + H 2 0)Z..... ..................................... 7'6 



(NH 3 ^ + wH 2 0)Z ....................................... 8-8 



Hydrogen chloride (HClgf + 2H 2 0)Z .............................. 11-6 



(HC10+ 6'5H 2 0)Z ............................ 16-5 



(RClg + 7?H 2 0)Z .............................. 17'4 



bromide (HBr0 + 2H 2 0)Z .............................. 14'2 



,, (HBr^ + 7iH 2 0)Z .............................. 20 



iodide (HIgr + 3H 2 0)Z .................................. 15'6 



rc,H 2 0)Z .............. . .................. 19-5 



n is any large number of molecules so that the solution is 

 dilute. 



