Predict the order of elution in GC with a polyethyleneoxide stationary phase for

Question

Predict the order of elution in GC with a polyethyleneoxide stationary phase for the mixture consisting of the following compounds Predict the order of elution in reverse phase HPLC with a C_18 stationary phase for the following three pairs of pharmaceutical compounds: (A-C). (Write down 1 in the cell with the pound with a shorter retention time and 2 in the cell with the compound with a longer iron time. Do not write down in boxes). The eluent is 26.5% v/v of methanol, 16.5%v/v and of 0.1M ammonium acetate adjusted to a pH of 6.0 with glacial

Explanation / Answer

Order of elution starting from first elution is as under

1. HOCH2CH2C(OH)=O

2. CH3CH2C(OH)=O

3. CH3OH

4. CH3CH2CH2OH

5. CH3CH2C(H)=O

3.

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