,
_____ .
3) 1
69. :
H2CO3 + NaCl → HCl + NaHCO3
70. ?
,
, .
,
- , .
. _________.
75. S-?
76. ____ , .
3) 30
S- _____ , S-.
1) 14
, . S- _______.
79. ________/.
2) 160
80. ( ) _______ /
2) 3,5-5,0
81. , , , __________ /.
2) 3,5-3,8
82. , , 10(4)6 ()2 + 14+ 102+ + 624-+ 22 _______.
83., 10(4)6 ()2 + 2NaF 10(4)6F2 + 2 NaOH, , _________.
84. , .
2) 10(4)6 F2
. , ______.
|
|
______ .
3) 104
87. , :