Acceleration in Chemical Change. 275 



The tbllowino- table oives the results of a series of observa- 

 tions in which T is the time from start, C the original con- 

 centratIon = l()5*5, /• = 10~^, /> taken as 4:*95, and m = 2, or 

 substitutino- in above equation 



x=16D'5-{{lQo'o)-^-{-10-'t\-\ . . . (10) 



c = 4-95 (1-2-^) (11) 



Temperature = 8()*5. 



(In these, ai.ul in subsequent cases, it will be understood 

 that AC = constant, i. e. the mass of decomposing substance 

 which should give 10 c. c. of gas under standard conditions of 

 temperature and pressure unless otherwise stated.) 



T 



found. 



ealc. 



foaod. 



z 



ealc. 



4-95-^. 



^ 1 



















4-95 



13-87 



3-61 



1 



2-61 



2-48 



2-47 



21-59 



5-73 



2 



3-73 



3-71 



1-24 



27-89 



7-32 



3 



4-32 



4-33 



•62 



3o-27 



8-66 



4 



4-66 



4-64 



•31 



37-95 



9-78 



5 



4-78 



4-80 



•15 



42-45 



10-87 



6 



4-87 



4-87 



•OS 



4(V88 



11-94 



7 



4-94 



4-91 



•04 



51-16 



1294 



8 



4-94 



4-93 



•02 



55-25 



13-87 



9 



4-87 



4-94 



•01 



The difiPerences between the values of z as calculated from 

 the differences of x and j/ and as calculated from equation 

 (11) are, with the exception of the first value, concordant to 

 within one per cent., which is within the limit of the experi- 

 mental error involved in the found values of T. 



The results obtained in other series of observations of a 

 similar type are given below. 



Series II. (Temperature 80'5). 

 C = 164, A = 3-22, »i = r56, /j=10-\ 



T 



X 



y 



z 



z 



3-22-.^. 



found. 



ealc. 



found. 



=^x-y. 



ealc. 























3-22 



8-43 



2-12 



1 



1-12 



1-15 



2-07 



1494 



3-90 



2 



1-90 



1-89 



1-33 



20-74 



5-37 



3 



2-37 



2-36 



•86 



25-84 



6-64 



4 



2-64 1 



2^67 



•55 



30^97 



8-00 



5 



3-00 



2^86 



•36 



35^72 



906 



6 



306 



-•99 



•23 



40-57 



10-22 



7 



3-22 ' 



3-08 



•14 



44-92 



11-23 



8 



3-23 



3-22 



-00 



49-12 



12-14 



9 



.3-14 



3-18 



•04 



T2 



