. () , . , . 35-45˚. 50˚ , .
:
1. 1:10;
2. 1 % ;
3. .
. 4 1 . ;
1 - (0);
2 - (20);
3 - 37;
4 - (100).
5 1 10 . : , , . , 2 ( ). .
:
1 :_____________________________________________
2 :_____________________________________________
3 :_____________________________________________
4 :_____________________________________________
: _____
____________________________________________________
. 6,8. , , - - .
:
1. , 1:10;
2. 1 % ;
3. 1 % Na2HPO4;
4. 1 % NaH2PO4;
5. .
. 3 1 . :
1 - 1 ( );
2 - 1 Na2HPO4 ( );
3 - 1 NaH2PO4 ( ).
1 . (37) 10 . . 2 NaH2PO4, . , 2 . .
:
1_____________________________________________________
2_____________________________________________________
|
|
|
3_____________________________________________________
4_____________________________________________________
: ______
_______________________________________
. . . Cu+2 ( I), , u2 ( - ), , ( ) .
:
1. 1 % ;
2. 2 % ;
3. 1:10;
4. ;
5. 10 % NaOH;
6. .
.
4 .
1 - 2 0.5 ;
2 - 2 0.5 ;
3 - 2 0.5 ;
4 - 2 0.5 .
10 (37). 5 I, 5 II 2 . .
:
1_____________________________________________________
2_____________________________________________________
3_____________________________________________________
4_____________________________________________________
: _____
____________________________________________________
6
