38. Solving a chemistry problem
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38. Solving a chemistry problem
47.54 Match: An impurity found in water obtained by distillation. Confirmation of presence of impurity
47. Chlorides
54. Reducing agents
A. Barium chloride, hydrochloric acid dil., white precipitate
B. Silver nitrate, nitric acid, white precipitate
B. Sodium sulfide, acetic acid dil., black precipitate
G. Ammonium oxalate, ammonium chloride, ammonium hydroxide, white precipitate
D. Diphenylamine, blue color
E. Diphenylamine, disappearance of blue color
G. Potassium permanganate, sulfuric acid dil., heating, pink color
H. Potassium permanganate, sulfuric acid dil., disappearance of pink color
I. Lime water, agitation, cloudiness
K. Lime water, shaking, no cloudiness
L. Nessler´s reagent, yellow color.
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