Explain and apply a colourimetric test for cyanide

Reference no: EM13150321

Mr. Moneybags was found dead on the floor of his study. Investigators found an open bottle of scotch on his desk, and a broken glass on the floor near his body. His skin appeared pinkish. Authorities suspect cyanide poisoning and decided to apply a colourimetric test for cyanide with a sample of Mr. Moneybags' scotch. the test gives a visible color in the presence of cyanide and no color in the absence of cyanide. Match the following tests (a-d) with their purpose (i-iv) (a) unopened scotch + the colourimetric reagent (b) Unopened scotch + the colourimetric reagent + KCN (c) Suspect scotch + the colourimetric reagent (d) Suspect scotch + the colourimetric reagent + KCN (i) Analytical test (ii) control to confirm a negative analytical test (iii) Positive control (iv) Negative control

Reference no: EM13150321

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