A reaction mixture was spotted on a TLC plate and the plate was developed. The starting material ...

A reaction mixture was spotted on a TLC plate and the plate was developed. The starting material had one spot at Rf 0.65 (sample Y) and the reaction mixture had a spot at Rf 0.45 (sample X) ----- XY no reaction had occurred. one product with Rf 0.45 was formed one or more products were present, and all have Rf = 0.45 one product was formed but there was still starting material.