Question

Problemele 6, 7 si 8 va roog.

Answer 1

6. MKMnO4=AK+AMn+4AO=39+55+4*16=158g/mol

n=m/M=15.8/158=0.1 moli KMnO4


2 moli KMnO4..........5*22.4L Cl2
0.1 moli KMnO4.....x=5.6 K Cl2

R:B) 5.6L Cl2

7. n=V/Vm=5.6/22.4=0.25 moli Cl2

1 mol Cl2.........6.022*10^23 molecule
0.25 moli Cl2........x=1.5055*10^23 molecule

R: D)

8. 56/100*200=112g Fe care reactioneaza


2Fe + 3Cl2 = 2FeCl3

2*56g Fe.............2*162.5g FeCl3
112g Fe.................x=325g FeCl3

R:B)