Răspuns:
ecuatia reactiei chimice
2mol............................................................................................1mol= =
2NaCl + 2H2SO4+ MnO2----> MnSO4 +Na2SO4+2H2O + cl2
2x58,5g......................................................................................1mol
200g..................................................................................................x
x=niu=1,71molCl2
pV= niuRT
p=850mm/760mm/at= 1,118atm
T=30+273=303K
1,118xV= 1,71x0,082x303
V=38L Cl2
Explicație: