JAMB - Chemistry (2019 - No. 14)
Which process(es) is/are involved in the turning of starch iodide paper blue-black by chlorine gas?
chlorine attacks the starch to give the blue-black color
chlorine attacks the iodide ion to give the blue-black color
chlorine oxidizes the iodide ion to produce iodine which attacks the starch to give the blue-black color
iodine attacks the starch to give the blue-black color