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)
