2022
Chemistry
POST UTME
A gas that will turn orange K2CrO, solution to clear green is
A.
sulphur (IV) oxide
B.
hydrogen sulphide
C.
sulphur (VI) oxide
D.
hydrogenchloride
Correct Answer: sulphur (IV) oxide
Explanation
both SO and HS change the colour of KCrO from orange to green. The only difference is HS leaves behind a yellow deposit (of sulphur) while SO does not
both SO and HS change the colour of KCrO from orange to green. The only difference is HS leaves behind a yellow deposit (of sulphur) while SO does not
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