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
Explanation
Correct Option
cNo explanation available
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Discussions (4)
Dave333
4 years ago
Here, it is clear that chlorine oxidises iodide ions into iodine of the paper and then the starch which acts as an indicator reacts with iodine to indicate blue- black colour.
Reedah6
2 years ago
halogens such as chlorine,iodine,etc are known to displace themselves.therefore,chlorine attacks the starch to liberate iodine giving a blue-black colour
