4HCl + O2 = 2H2O + 2Cl2
.
, , , . . , . . .
, , DG - (- ), . :
DG0.. = DH0.. - T DS0.., (1)
DG0.. = n DG0. - n DG0. . (2)
. DG0 < 0, ; DG0 = 0, .
, , . [1] :
HCl () O2 () CI2 () H2O (),
DH0, / -92,31 0 0 -241,83,
S0, /× -186,68 205,03 222,95 188,72,
DH0.. = [2DH0(H2O) + 2DH0(Cl2)] - [4DH0(HCl) + DH0(O2)] =
= [(2 × (-241,83) + 2 × 0] - [4 × (-92,31) + 0] = -112 ,
DS0.. = [2S0(H2O) + 2S0(Cl2)] - [4S0(HCl) + 3S0(O2)] =
= (2 × 188,72 + 2 × 222,95) - (4 × 186,68 + 205,03) = -130 ×K =
= -0,13 ×,
DG0.. = DH0. - TDS0..,
DG0.. = (-112) - 298 × (-0,13) = -73,36 .
, , .