34 Mr. W. Sutherland on the Fundamental 



29'0=2r + v s , 



133-1 = 6r + 2v s + 3v u 



which, with the above values of r and v v give for v 3 the values 

 — l'lj '4, and *2, which are small, and the average of which 

 may be taken as 0. 



The values which in our notation correspond to these may 

 be got as follows : — first, on looking at the strict form of 

 equation (10) we see that 



4(H)+4/(CH)+/(C0 2 )-2/(CO) = 59-6 = 4r; . (13) 



again, for C 2 H 6 we have 



2(CsoHd)4-6(H)+/(C-C) + 6/(CH)=27-4, . (14) 

 and from (9) 



-2(C solid) +2/(C0 2 ) -4/(00) = 76-8 ; 

 therefore 



6(H) + 6/(CH) +/(0 • C) + 2/(C0 2 ) -4/(00) = 104*2 = 6r + 1* 



So for acetylene, 



2(0 solid) + 2(H) +/(C:0)+2/(0H) = - 47-8, . (16) 

 -2(0 solid) +2/(C0 2 )- 4/(00) =76-8 ; 

 therefore 



2(H)+/(C :C)+2/(CH)+2/(OO s )-4/(CO)=29=2»-+« s . (17) 



Thus strictly 



/•=(H)+/(CH) + iV'(C0 2 )-2/(00)} = 15, . (18) 

 »i= /(0-0)+i(/-(CO 2 )-2/(0O)} = 14, . (19) 



from(7K= /(C:C)+ |/(C0 2 )-2/(CO)} = 14% (20) 



/(0:C)+-|{/(C0 2 )-2/(CO)}= 0. . (21) 



With the assumptions /(C0 2 ) = 2/(00), and (H) = 0, these 

 simplify to : — 



r=f {CS) =15, (22) 



<V=/(C-C) = 14, (23) 



W(C:C)=14% (24) 



«k*/(G:0)- 0, (25) 



