TS EAMCET · Chemistry · Redox Reactions
In the titration of by using the starch indicator, the end point is indicated by:
- A Colourless to blue
- B Blue to colourless
- C Pink to colourless
- D Blue to pink
Answer & Solution
Correct Answer
(B) Blue to colourless
Step-by-step Solution
Detailed explanation
Titration of iodine (I2) by thiosulphate solution (S2O32-) follows the reaction: 2S2O32-+I2→2I-+S4O62- In the presence of starch, free iodine present in the solution imparts blue colour to the solution. End point marks the completion of reaction, that is, at this point all…
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