1 . NaCO3 , .
( )
I
1 10 2,5 (2SO4) = 0,25 /, 1,3 (HNO3) = 0,1 / 3,5 (NaOH) = 0,3 /, . .
(: 1,48)
2 (ω(H2SO4) = 94,72 % ρ- = 1,833 /) (ω(HNO3) = 0,333 % ρ- = 1,000 /), . (: . = 1,3; 25,8 )
3 750 (ω() = 0,197 % ρ- = 1,000 /) 1,00 ()2. . (: 12,7)
4 5,0 ω(H2SO4) = 98,0 % 5,0 . . (: 1,7)
5 1 =1 2 = 2. . (: 1,26)
6 (ω(H2SO4) = 96,0 % ρ- = 1,84 /) 10,0 = 1. (: 27,74 )
7 1 =11 2 = 12. . (: 11,74)
8 1 =2 2 = 11. . (: 2,35)
9 = 12. ()2 . (: 0,005 /)
10 Sr(OH)2∙8H2O 0,7 100 20 0. . (: 12,72)
II
1 (ω(3) = 9,0 % ρ- = 1,000 /). (ω(3) = 80,0 % ρ- = 1,07 /) 500 , 0,1.
( (3)= 1,754∙105) (: . = 2,29; 36,9 )
2 NH4OH(b = 1,79∙105) 1,5 %. NH3 (ρ- = 1,000 /). (: (NH3) = 7,96102 /; =11,08; ω(NH3)= 1,35 %)
3 HF ( = 6.61∙104) ( = 1,77∙104) . .
(: α (F) = 1,93 α(); () (F) = 0,286)
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4 2,0 . (..) , . (b(NH4OH) = 1,79∙105) (: 25 =10)
5 (ω() = 0,141 %, ρ- = 1,000 /) 2,436. , = 5,1∙104. .
(: HNO2 )
III
1 100 (ω(Na2CO3) = 2,0 % ρ- = 1,019 /) 250 . . (2 (23) = 4,69∙1011) (: 1= 11,81, h1=3,33 %; 2= 11,53, h1=6,23 %)
2 Na3PO4 750 , = 12. . (3 (34) = 1,26∙1012) (: 2,78 )
3 (23) (2S3) . (2 (23) = 4,69∙1011 2 (2S3) = 6,31∙108)
(: h(23) = 36,68 h(2S3); (23) (2S3) = 1,56)
4 10,0 (ω(3) = 3,0 % ρ- = 1,00 /) 15,0 . . . ( (3)= 1,754∙105)
(: .= 2,53; .= 9,03 )
5 100 (NH4Cl) = 0,01 / 500 (NH4Br) = 0,025 /. . (b(NH4OH) = 1,79∙105)
(: NH4+; =5,56 )
6 150 Na2SO3 138 . . (2(2SO3) = 6,31∙108).
(: (Na+) = 0,04 /; (S32) = (Na2SO3) = 0,02 /; pH= 9,75)
IV
1 500 Ca3(PO4)2 2,352∙104 2+. / /, .
(: 3,92106 / ; 1,22103 /; = 11025)
2 PbJ2 / / ( = 1,1 109) 0,1 J. ?
(: S= 6,5104 /; ρ = 0,3 /; S*= 1,1107 /; S / S* = 5909)
3 Ag2CrO4 0,03 50 . . ((Ag2CrO4) = 1,4∙1012)
(: 3,9 % )
4 0,5 BaSO4? ((BaSO4) = 1,1∙1010) (: 204,6 )
5 (III) Cr(OH)3 (III) (CrCl3) = 0,001 / ((Cr(OH)3) = 6,7∙1031) (: > 4,94)
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6 Mg(OH)2, 10,534. (: 21011 )
