If you were monitoring the reaction of trans-stilbene being convert to stilbene

Question

If you were monitoring the reaction of trans-stilbene being convert to stilbene dibromide via TLC, and under UV visualization you saw all three lanes, starting material / co-spot/ reaction, had visible spots, and when treated with KMnO4 and heated spots in all three lanes were yellow, what would you conclude. O The reaction had not gone to completion yet. O The reaction was complete. You failed to spot the TLC plate with a concentrated enough solution. O You used the wrong starting material because the neither the starting material or the product should stain with KMnoa.

Explanation / Answer

1) option a the reaction had not gone to completion yet explanation: Kmno4 is used for detection of olefinic double bonds , but given in question that all lanes has visible spot so it indicates there all olefinic double bonds hence reaction had not gone to completion yet. 2) option d The chemist name is Barhate .

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