THERMO-CHEMISTRY. 71 



(93) FORMATION OF SOLID SALTS FROM THE SOLID BASIC AND 



GASEOUS ACID OXIDES (see 90)- 



S0 3 + BaO 113-8 



SO S + Na 2 134-4 



N 9 a + Na.,0. 



25 



C0 2 + BaO 56 



C0 2 + SrO 53-4 



C0 2 + CaO 43-4 



N 2 0g + BaO 95-6|CO f -* PbO 21 -6 



C0 2 + K 2 86 6 C0 2 + Ag 2 19'6 



C0 2 + Na 2 75-8 I 



(94) FORMATION OF A GASEOUS COMPOUND BY TIIE UNION OF 

 GASEOUS CONSTITUENTS (see 90). 



Hydrogen chloride H + Cl 22 



bromide H + Br 13'5 



iodide H + I 0-8 



,, sulphide H 2 + S 7 '2 



Steam H 2 + 59 



Ammonia3H + N 12'2 



Nitrous oxide No + - 20'6 



Nitric oxide N + - 21 '6 



Nitrogen trioxide N,, + 3 - 22'2 



tetroxide N + 2 - 2'6 



,, pentoxide N 2 + 5 - 1*2 



Hydrogen nitrate H + N + O 3 34'4 



Chlorine monoxide C1 2 + - 15*2 



Sulphur chloride S 2 + C1 2 16'2 



Sulphur dioxide S + 2 71*6 



Sulphur trioxide S + 3 96'4 



S0 2 + 24-8 



Sulphuryl dichloride SOo + C1 2 13'2 



Carbon dioxide CO + 68 '2 



Carbonyl dichloride CO + C1 2 18 '8 



,, sulphide CO + S 3'6 



Hydrogen cyanide CN + H '. 7'8 



Benzene 3C 2 H 2 171 



Ammonium chloride NH 3 + HC1 42 '5 



bromide NH 3 + HBr 45'6 



iodide NH 3 + HI 44'2 



cyanide NH S + HCN 20'5 



sulphide NH 3 + H 2 S 23 



nitrate NH 3 + HNO a , 41 "9 



N B . All these salts are solid. 



