(52) 
Solution : Cu(NO;) = 2.24 GV °L; 
HNO; == 1.89 GV © (No). 
Temps Nombre Poids du zinc Perte de poids du zinc 
en de 
beures. séries. RNA ms ARLES en °/o. 
4 1 49,4700 |  41,2846 41,1854 
9 49,1435 |  40,9789 11646 
9 91,6135 | 22,265 2,3500 9.84 
9 4 416318 | 104635 1,4683 | 
9 41,6205 |  10,1214 1,4991 
9 95,2593 | 92),98:9 | 29614 12.16 
3 1 11,6542 |  10,0248 4,6324 
9 11,6548 |  40,0314 1,6034 
9 23,8090 | 20,0732 3,2358 13.88 
A 1 42,1799 |  40,4214 4,1585 
9 12,0803 |  10,2539 1,826 
9 9249604 |  20,6773 3,5834 44.77 
3 4 11,9853 9,8801 9,1052 
6) 44,8751 9,9156 1,9595 
9 93,8604 |  19,1957 4,0647 47.04 
6 n 14,6144 9,1838 | 21516 
9 14,5948 9,4316 24602 
9 23,2032 |  18,8854 4,478 1848 
46 1 44,9561 8,4543 3,5018 
Ch 19,0528 8,4239 3,6289 
9 94,0080 |  46,8782 7,4307 99.77 
