Question on: JAMB Chemistry - 2019
Which process(es) is/are involved in the turning of starch iodide paper blue-black by chlorine gas?
A
chlorine attacks the starch to give the blue-black color
B
chlorine attacks the iodide ion to give the blue-black color
C
chlorine oxidizes the iodide ion to produce iodine which attacks the starch to give the blue-black color
D
iodine attacks the starch to give the blue-black color
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Correct Option: C
The oxidization of iodide (by chlorine) ion produces the iodine which attacks the starch to give the blue-black colour
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