[Ashutosh]

what is tracer technique
 concedur follwing reaction
CH3COOH+CH3CH2OH=CH3COOCH2CH3+H2O
ho it is concluded that -oH is removed from acetic acid & H is removed from alcohol
Thank you

[movies]

I think you could do this with isotopic labeling.  Is that what you mean?

For example, if you used ¹⁸O labeled ethanol in this reaction and then looked for ¹⁸O in the water and ethyl acetate products.  If there was only ¹⁸O in the ethyl acetate and only ¹⁶O in the water, then you could conclude that the OH part of the water came from the acetic acid.

[Ashutosh]

THANKS MOVIES
I UNDERSTAND THIS IDEA.BUT I NEED TO KNOW HOE IS IT PROVED BY TRACER TECHNIQUE?AND WHAT IS TRACER TECHNIQUE