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2.3. .

2.3. .

, . , , , , . : .

. , Df

() + () + 1,52() = 3(), Df = - 1206 .

(2, 2, , .) , ﳿ .

. , :

, .

+ b = + dD D - ?

, b, , d , , , D. D = (Df + dDfD) ( aDfA + bDfB).

. 26

26() + 3,52() = 22()+32(),

D298 =-1559,87 /.

, ﳿ : Df298(2)= -393,51 /, Df298 (2) = - 285,84 /.

³ :

D = 2Df(2) + 3Df(2) - Df(26).

Df298(26) = 2Df298(2) + 3Df298(2) - D298 =

=2(-393,51) + 3(-285,84) (-1559,87) = -84,67 /.

ﳺ , . , D

25() + 32 = 22() + 32().

2, 2() 2(), SO3 . , (, N2, HCl), . ﳿ , . , :

, .

D = (D + D)-(D + dDD).

,

()2() + 23() = (3)2() + 22().

:

D[()2]= -251,8 /,

D[(3)] = -727,6 /,

D[(3)2] = -1680,2 /,

D(2) = 0.

D = -251,8 + 2(-727,6) (-1680,2) = -26,8 /.



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