Acceleration in Chemical Change. 



"Ill 



ami MP = C— //"! and ADE is the curve rep rej^en ting the 

 course of iU^conn)osition i£ no gas were absorbed (MQ=:C — <r). 

 Hence PQ = c or gas absorbed in time T. It' B is the point 

 ot* saturation, BD = /> = 4*95, and after the point B the amount 

 of gas made is the same per unit time as the amount of gas 

 evolved. /. e. BC and DE are parallel. 

 Ai 



^p 

















K^ 

















s< 



\ 



N 

















\ 



\ 



\ 



V 

















K 





X 



















\l 



1 



\ 

















N 



i 



\ 



\ 







' 



1 

 1 





;\ 



\ 



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O i\I N E C 



Example 11. The decomposition of ammonium nitrate into 

 nitrous oxide and steam. This chemical change is in accor- 

 dance with the monomolecular law, then if y is the gas 

 evolved at time T and z the amount of absorption 



also 



CxdT=\di/, 



^): 



(12) 



(13) 

 clT 



dT being the observed time of the evolution of du^ anc 

 being the calculated time. Therefore 



dTldT=:d(y-z)ldy = \-\-dzld!j. . . . (14) 



^ In the table given below the times for each observation are 



given in the first coknnn, the values of 1 + dzjdij in the second, 



the derived value of z in the third, the values of z calculated 



from equation (9) wherein 



c = -21{l-(l-G2)-vj. (15) 



in the fourth, and the calculated values for -21 — ^ in the 

 fifth column respectively. 



