Describe the difference between a ketone and an aldehyde in an 1H NMR spectrum.
◦ An aldehyde has a signal at 5.0 ppm.
◦ An aldehyde has a signal at 8.0 ppm.
◦ An aldehyde has a signal at 3.5 ppm.
◦ An aldehyde has a signal at 2.1 ppm.
◦ An aldehyde has a signal at 9.0 - 10.0 ppm