) NaHCO3 (0,5-2% ) , , . , NaHCO3 , ( ) , , .
: NaHCO3 (1% ). .
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. .
:
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:
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) NaHCO3 ( , , , .). NaHCO3 ( ). , , .
: . .
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:
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C :
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) (NaHCO3) (MgO) . .
: 2 1 NaHCO3, - MgO. .
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:
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C , :
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3. . Na2B4O7´10H2O , , . , .
: Na2B4O7´10 H2O (). . .
|
|
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:
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4. .
(), . ( ) (), , , .
: l2, 2 , , . .
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:
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C :
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5. . , .
: : Ba2+ + SO42- = BaSO4, . BaSO4 .
:
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: ( BaSO4 )
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.
1. S - ?
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2. , - , , , S- I- ?
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3. NaCl?
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4. , Ba2+ ?
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1..2.2.
- .
6
.
: - , .
: Na2B4O7´10 H2O, AlCl3, KOH NaOH, HCl, Na2HPO4 (H3PO4), NH4OH, , BiCl3 Bi(NO3)3, NH4Cl, Na2S2O3, Na2SO4, BaCl2, Pb(CH3COO)2 , NaHCO3, 3, .