( I )
( . ..)
2002
. ... , . - , , 2002, - 154 .
11 , - . . ., .. , .. , .. , .., .. , ....,
.
: ..., ..,
... ..
2002, .
ã , 2002 .
ã .., 2002 .
.
, - .
(f(x)) - , , - . f(x) - , f(x) .
((x)) ( ) - , :
() = f(x) × ().
/.
:
f() = 1/[( )×( )];
f() = 1/ ;
f() = 1/ ;
f() = 1/[( )×( )];
f= 1/[( )×( )].
1. , .
2. - , .
1
H2SO4, CaO, Ca(OH)2, Al2(SO4)3:
1) (H2SO4) = 1/2×98 = 49 /;
2) () = 1/2×56 = 28 /;
3) (()2) = 1/2×74 = 37 /;
4) (Al2(SO4)3)= 1/(2×3)×342 = 57 /.
. , .
: :
|
|
mA/m = / mA/ = m/ ,
mA/ = N1; m/ = N2 - , N1 = N2. , : .
, 8 /, , 1 /.
2
2,81 3,21 . .
mo = 3,21 - 2,81 = 0,4 - .
2,81/0,4 = (d)/8 Þ (d) = 2,81× 8/0,4 = 56,2 /.
3
0,183 Mg. 182,7 20 750 . Mg.
=750/760×1,013×105=1×105 ; =273+20=293 ; V=182,7×10-6 3, =2 /.
- :
m(H2)=p×V×M/(R×T)=1×105×182,7×10-6×2/(8,31× 293)=0,015 .
0,183/0,015 = mg/1 Þ mg = 0,183 × 1/0,015 = 12,2 /.
() :
() = /n,
- , n - .
4
, Cr - 68,42 %, O - 31,58 %.
:
mr/m = Cr/ Þ r = 68.42 × 8/52 = 17.3 /.
:
=/n Þ n(Cr) = 52/17,3 = 3.