5-4, 6-4, 7-1,
8-1 ( FeCl2 + 2NaOH = Fe(OH)2 + 2NaCL)
9 ( 1-в,2-б, 3-а)
10 (А-3,7, Б-4,6,9, В-1,2,5,8)
1-4, 2-2, 3-3,
4-3 (H2SO4 + 2NaOH = Na2SO4 + 2H2O = 1+2+1+2 =6)
5-2, 6-4, 7-1
8-2 (ZnCl2 + 4NaOH = Na2[Zn(OH)4] + 2NaCl)
9( 1-в, 2-б, 3-1)
10 (А-3,7, Б-4,6,9, В-1,2,5,8)