An analytical chemist has received 2 packets, both containing about 1g of a white powder, which were surrendered at a music festival. The chemist has confirmed that the first of these packets (Powder 1 ) contains the illegal drug mephedrone. Mephedrone The identity of the compound in the second packet (Powder 2) is yet to be confirmed. You will use your knowledge of characterisation to review the data and assist in the identification of the unknown substance. 1. a) Identify the principle functional groups of mephedrone b) Where approximately in an IR spectrum would you expect to see signals corresponding to these functional groups? Describe expected appearance of the peaks