1. ( ):
1.1. , .. , :
6126 ()= 2 25()+ 2 2().
1.2. , .. : 122211 () +11 2()=12 2() + 11 2().
1.3. Δ G - β 18 ; Δ - = 6,75/; Δ S 0- = 9,74/×.
1.4. 2 22() + 2() = 22(), 2 4 ?
1.5. 102 / 37 , 35 /. ?
1.6. 40 o, 2,5?
1.7. , -192. , 45 , 74,08 .
2. .
3
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: , .
( ):
1. ? ? ?
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2. ?
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3. , ?
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4. ? -.
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5. ? ?
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6. 50 2 15 . 70 , 3?
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7. 30 25 , 50 4 . .
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: ; ; ; 100 ; ; 50 (3 .); 25 ; 25 Na2S23 H2SO4; 200 (2 .) 25 (1 .); ; ; .
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: H2SO4 (2 1:200); 2) Na2S23 (1 1:200); (3 %); (IV).
1. .
) 1 Na2S23 2 H2SO4. , :
Na2S2O3 + H2SO4 = Na2SO4 + SO2 + H2O + S.
, , .
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) (1:200) Na2S2O3: - 5 , - 10 , - 15 . 10 , - 5 . 5 (1:200) . Na2S2O3 5 H2SO4 . :
V(Na2S2O3), | V(2), | V(H2SO4), | , | - Na2S2O3 | , τ | , V = (1/τ) | |
1 2 3 | 5 10 15 | 10 5 - | 5 5 5 | 20 20 20 | 1C 2C 3C |
, Na2S2O3 , - V = 1/τ. .
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2. .
(1:200) Na2S2O3 H2SO4. 10 Na2S2O3, - 10 : Na2S2O3 H2SO4 . , , .
10 . , . , . , 20 . :
V(Na2S2O3), | V(H2SO4), | , | , τ | , V = (1/τ) | |
1 2 3 | 10 10 10 | 10 10 10 | + 10 + 20 |
: , - V = 1/τ.
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3. (IV).
3 3 % - MnO2. .
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