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2.




1.

v 1. , , 1 HCl 92 .

, DH () .

DH0 = Qp = ‑92 , (‑) , .

1/2H2() + 1/2Cl2() = HCl(), ∆0 = 92 .

, :

H2() + Cl2() = 2HCl(), ∆0 = 184 .

v 2. Al2O3(),

4Al () + 3O2 () = 2Al2O3 (), DH0 = 3340 .

1 , . 2 . : , , - . , 1 ( ):

2Al () + 3/2O2 () = Al2O3 (), .

:

v 3. (. ) . .

DH0 , /
H2O () -242
H2S () -20
H2Se() +85
H2Te () +154

: , .

H2Te () H2Se () H2S () H2O ().

v 4. , DH1, DH2 DH3, .

1) () + O2() = CO2(), DH1;

2) () + 1/2O2() = CO(), DH2;

3) CO() + 1/2O2() = CO2 (), DH3.

, . . (1) (2) (3), ..

:

v 5.

2H5OH() + 3O2() = 22() + 3H2O().

C2H5OH() O2() CO2() H2O()
DH0, / ‑278   ‑394 ‑242

 

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v 6. , ( ) 1 . .

DH0 , /
CaO() 2() ()2() 635 286 987

:

CaO() + 2() = ()2().

, :

, .. . Q = DH0 = ‑66 1 . , 1 :

, 1 ,

: 1 1175 .

1. , DH0 (1) (2): , CaCO3() FeO() . .

1) CaO() + O2() = CaCO3(), DH0 = ‑180 ;

2) Fe() + 1/2O2() = FeO(), DH0 = ‑272 .

2. , , Hg2 K2, , (/): ‑91, ‑360.

3. , , 1 242 .

4. Fe3O4() + C() = 3FeO() + O(), , , - .

DH0, /
Fe3O4() C() FeO() O() ‑1117 ‑263 ‑111

5. CH3OH(),

CH3OH() + 3/2O2() = CO2() + 2H2O(), DH0 = ‑726,5 /.

.

DH0, /
O2() CO2() H2O() ‑393,5 ‑285,8

 

2.

v 1. , DS :

) 2NO() + O2() = 2NO2();

) CO2() = CO2();

) 2CH3OH() + 3O2() = 2CO2() + 4H2O().

() (), , (DS<0). () ( ), (DS>0).

: ) DS<0; ) DS>0; ) DS<0.

v 2.

CaO() + CO2() = CaCO3() .

.

/ S0, /(.) , /
CaO() CO2() CaCO3() ‑ 635,2 ‑ 393,6 ‑ 1207,1 39,8 213,7 92,9 ‑ 603,9 ‑ 395,5 ‑ 1129,0

1.

.

2. , , .

.

, .

1. , ,

4NH3 () + 3O2 () = 2N2 () + 6H2O ();

2NO () + O2 () = 2NO2 ();

C () + H2O () = CO () + H2 ().

2. DS0

2H4() + 3O2() = 2CO2() + 2H2O().

, /(.)
2H4() O2() CO2() H2O() 219,4 205,0 213,2 188,7

3. DG0

MgCO3() = MgO() + CO2().

DG0, /
MgCO3() MgO() 2() -1028 - 569 - 395

4.

CCl4() + 4HCl () = H4() + 4Cl2(),

= +434 / D = - 117 /(.). .


 





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