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1. ____.____. 20 ___
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( ρ =1,070 /) HCl 200 0,1 / - .
V (-) =200 = 0,2 (HCl) = 0,1 / ρ (-) = 1,07 / (HCl) = 36,5 / _____________________ m (- HCl) V (H2O) =? | 1. (m (- HCl) ) |
2. HCl :
m (p-p HCl) = m (HCl) / V (HCl) (m (HCl) V (HCl) )
3. ω , ρ HCl. HCl
m (HCl) = M (HCl) n (HCl) (n (HCl) )
4. HCl
n (HCl) = V (p-p) C(HCl) ( )
4.1 n (HCl) = 0,2 0,1 / = 0,02
4.2 m (HCl) = 36,5 / 0,02 = 0,73
4.3 ω (%) = 14% ω ( ) = 0,14 ( 14)
4.4 m (p-p HCl) = 0,73 / 0,14 = 5,2
4.5 V (- HCl) = 5,2 / 1,07 / = 5
4.6 V(H2) = 200 - 5 = 195
: .
1. , 0,154 / ( 1,001 /.)?
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2. 3% ( 2% 1,0058 /, 4% 1,013 /.).
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3. , 10% 100 , 6%.
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4. 100 KI r 0,1 /. -?
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2. ____.____. 20 ___
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: (1/z X) ∙ V (X) = (1/z T) ∙ V (T)
1
20%- KOH (ρ = 1,3 /), 1,5 (KOH) = 0,1 /.
: ω(KOH) = 20% C(KOH) = 0,1 / V(KOH) = 1,5 ρ = 1,3 / | : 1. KOH ω = 20% V(-) = |
V(KOH, 20% -) =? | ρ , . |
2. ω = 20% KOH, :
ω =
m (-) = ω % , KOH .
3. KOH , KOH KOH.
m(KOH) = M(KOH) ∙ υ(KOH) M(KOH) = 56/.
4. KOH , KOH .
υ(KOH) = V(-) ∙ C(KOH)
C(KOH) .
1. KOH:
n(KOH) = 1,5 ∙ 0,1 / = 0,15
2. :
m(KOH) = 0,15 ∙ 40 / = 6
3. , 6 KOH:
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m(-) = = 30
4.
V(-) = = 23
: 23 . 1,5 .
2
250 . 20 :
2NaOH + 2H2SO4 = Na2SO4 + 2H2O
24 C(1/2H2SO4) = 0,08 /.
NaOH, .
: V1(NaOH) = 200 = 0,20 . V2(NaOH) = 20 V(H2SO4) = 22 (1/2H2SO4) = 0,055 / | : 1. NaOH. (NaOH) ∙V(NaOH) = C(1/2H2SO4) ∙V(H2SO4) C(NaOH)= = 0,605 /. |
m (NaOH) =? |
2. NaOH :
m(NaOH) = C(NaOH) ∙V1(NaOH) ∙M(NaOH)
m(NaOH) = 0,605 /∙0,20 ∙40 / = 4,84
: 4,84 NaOH.
:
1. (X), . . (X), 20,0 (?), () = 0,1 /.
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2. (X), . . (X), (X) 15,0 12,0 (?), () = 0,07 /.
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3. (X), . . (X) 5,00 12,00 (?), (1/z T) = 0,01 /.
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4. (X), . . (X), (X) 10,00 (II) 20,00 0,05 /, 10,00 (?), (1/z T) = 0,05 /.
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(1/z HNO3) ∙ V (HNO3) = (1/z NaOH) ∙ V (NaOH)
:
NaOH + HNO3 = NaNO3 + H2O
:
M(NaOH) = c(HNO3) ∙ V(HNO3) ∙ M(NaOH) ∙
:
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, , _____.
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(HNO3) = ______ /.
, V(NaOH) = _____.
NaOH, V( ) = _____ .
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1. HNO3.
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6. 250 .
7. ____ 3 .
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