CHEM 2311 Midterm: CHEM 2311 GT Examp5iv
Document Summary
Tables of ir frequencies and 1h and 13c nmr shifts are attached. You may use a calculator on this exam. Atomic masses: h, 1. 01; c, 12. 01; n, 14. 00; o, 16. 00; Cl, 35. 45 (a 3:1 ratio of 35cl and 37cl); br, 79. 90 (a 1:1 ratio of 79br and 81br: (32 points) circle the letter on the right which corresponds to the answer to each question. I number of signals: multiplicity, integral, chemical shift (iv) which of the protons in 3-butenal (shown at right) appear at furthest downfield in the 1h nmr spectrum, i, ii, iii, iv. C h iv (v) what are products of the collision between high energy electrons and methane: ch4, ch4. Ff: (26 points) (i) (4 points each) provide a single molecular structure consistent with the following data. The ir spectra have a number of peaks, only the most relevant are provided. Ir: 3520 (broad), 3400 (broad), 3050 cm-1 (and others)
