CHEM 2S11, Organle Chemistry I Spring 2016 Test t Due Date: April 12. 2016. to t

Question

CHEM 2S11, Organle Chemistry I Spring 2016 Test t Due Date: April 12. 2016. to the diagnostic region on an IR spectrum ) 4004000em E) none of the above Part1 1 Whkh ofthe following corespods to the A) 1500-4000c C) 400-1500cm 1500-2500 ent' eest with the IR spectrum of the product? 2 For the Bellowing reaction, which of the following is consis CHC Aabsorption ar 3200-3600 cm should disappear B) absopticn at 3200-3600 cm and 1100 cm should disappear C) absorption at 1720 cm should dissppear and absorption at 3200-3600 cm should appear should appeir CO absorption at 1720 em should disappear and D abeei3200-3600 cm should disappear and absorption at 1720 cm E) none of these ic ofhe z vaus cmresponds to the base peak in the following mass spectrum? A) 4 B)29 44 D D) 15 E) none of the above Which of the mz values which of the miz values correpond to the molecular ion peak in the following mass spectrum? 10 2030 40 0 m/z A) 4 B)1S C)29 D)44 E) none of the above . Which of the following compounds will have odd m/z value for the molecular ion? 0 Br A) 1 B) 11 C) D)IV E)none ofthe above NH2

Explanation / Answer

2) Ans:(D)

Reason: 3200-3600 Cm-1 is the -OH str Frequency and the -C=O str is the 1720 Cm-1. Hence the _OH frequency dissapears and -C=O frequency appears.

3) Ans: (C)

Reason: The peak which is high intencity is the Base peak.

4) Ans: (D)

Reason: The high intencity peak is the base peak, It is the stable fragment and the other peak is the Molecular ion peak.

5) Ans: (D).

Reason: According to the nitrogen rule, The organic compounds having the odd number of Nitrogens the mass of the molecule becomes odd number.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.