Hydrates of Hydrogen Bromide. 



119 



Table II. — Freezing-points of Aqueous Solutions of 

 Hydrobromic Acid. 



First Series. 



Per Cent. 

 HBr. 



Freezing-point. 



Per Cent, 

 HBr. 



Freezing-point. 



HBr, 2H 2 Crystallizes. 



Water Crystallizes. 



65375 



o 



-274 



38-394 



-734 



63-786 



-33-4 



35-677 



-58-4 



62-149 



-469 



32-864 



-47-9 





29974 



-37-9 



HBr, 3H 2 Crystallizes. 



27*117 



-30-1 





24-437 



-251 



60-500 



-48-4 



21-963 



-19-4 



58-816 



-50-4 



19-387 



-15-6 



57-180 



-53-8 



16-280 



-11-6 



55-414 



-55 9 



12-188 



- 6-9 





7-277 



- 3-4 



HBr, 4H 2 Crystallizes. 



4-289 



- 1-65 



53-370 



-56-2 







51-290 



-58-6 







48-878 



-62-9 







46-511 



none at — 77'4 







44092 



„ „ -85-4 







41-548 



„ „ -79-4 







Second 



Series. 





HBr, 2H 2 Crystallizes. 



44-112 



o 

 none at —73 



n 



43-208 



„ „ -80 



68-728 



-11-2 



43039 



„ „ -95 



67-396 



— 11-9 



41-989 



3» 55 79 



65-759 



-16-2 



40-726 



,5 „ -80 



64-447 



-21-9 



39112 



„ „ -80 



* 63069 



-28-8 



37-450 



„ „ -70 



61-691 



-38-3 







60-346 



-47-2 



Water Ci 



'ystallizes. 



HBr, 3H 2 Crystallizes. 



35-755 



-64-8 





34-692 



-59-4 



59-517 



-479 



33-243 



-53-3 



58-415 



-48-4 



31-583 



-46-3 



57-553 



-49-8 



30-216 



-41-8 



56-550 



-51-8 



28-897 



-37-3 



55-699 



-54-6 



27-301 



-32-7 





24-812 



-26-6 



HBr, 4H 2 Crystallizes. 



23-637 



-24-1 





21-712 



-20-7 



54-772 



-56-8 



19-940 



-17-5 



53-932 



-56-3 



17993 



-14-5 



52-986 



-55-7 



15-882 



-11-7 



52-066 



-56-3 



13-749 



- 9-3 



50935 



-56-7 



11-202 



- 6-8 



49-714 



-57-6 



6396 



- 3-0 



48-395 



-62-2 



3-490 



- 1-5 



47069 



-66-5 







