1.1
Reagents:
Sodium nitrite
,
Hydrochloric acid
Solvents:
Water
;
0 °C; 0.5 h, 0 °C
1.2
Reagents:
Hydrochloric acid
,
Stannous chloride
Solvents:
Water
;
0 °C; 4 h, 0 °C
1.3
Reagents:
Sodium hydroxide
Solvents:
Water
;
pH 13

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