3. Isopropyl alcohol can be oxidized to acetone via hot oxidation of sodium dichromate i) Sketch a predicted 1H NMR spectrum for isopropyl alcohol with signals in estimated chemical shift ranges and with expected splitting. (4 mark) ii) Give the integral values as a whole number ratio for the signals in the 1H NMR spectrum of isopropyl alcohol (2 mark) iii) How many 13 C NMR signals would you predict for isopropyl alcohol? (1 mark) iv) State the oxidizing agent for the above reaction other than sodium dichromate (2 mark)