Organic Analytical Techniques (Edexcel International A Level (IAL) Chemistry): Exam Questions

The mass spectrum of the compound shown is obtained using a high resolution mass spectrometer.

What is the mass to charge ratio, m/ z, of the molecular ion of this compound?

[A_r values: H = 1.0078    C = 12.0000    O = 15.9949]

This question is about chromatography.

A spot caused by an amino acid has moved 42 mm from the baseline of a paper chromatogram. The R_f value for the amino acid under these conditions is 0.62.

What is the distance moved by the solvent?

In gas chromatography, GC, which of these would be the most suitable carrier gas?

How many peaks are there in the carbon-13 (¹³C) NMR spectrum of methylcyclohexane?

In gas chromatography, a gas containing a mixture is passed over a liquid stationary phase. The main reason a mixture is separated into its components is because they have different

In the high resolution proton NMR spectrum of propan-2-ol, CH₃CHOHCH₃ there are

A mixture of organic compounds was analysed using thin-layer chromatography.

The R_f value was 0.92 for one of the components in the mixture.

What can be deduced about the attractions between that component and the stationary and mobile phases?