1.-5. Match each pair of compounds on the left a its corresponding melting point
ID: 500491 • Letter: 1
Question
1.-5. Match each pair of compounds on the left a its corresponding melting points (m.p.) or boiling points (b.p.) in oCto a major reason, given on the right, why the physical property increases. Answers may be repeated. Remember that "di" means two. NH20CH2)sNH2 is commonly known as cadaverine. 1. pentane-1,5-diol (m.p. -18), NH2(CH sNH2 (m.p. 12) -l a. easier to rotate in place 2. pentane-1,5-diol (m.p. -18), 2,2-dimethylpropane-1.3.diol (m.p. 129) E b. greater weight c. more hydrogen bonds 4. 2,2-dimethylpropane-1,3-diol (b.p. 208), pentane-1,5-diol (b.p. 242) A d. more polar bonds e, more van der Waal interactions 5. NH2(CH2)5NH2 (b.p. 179), butane-1,4-diol (b.p. 235) 6. Using the method that we learned in class to estimate specific gravities and given the following atomic weights (C 12, H- 1, N-14, o 16) which compound has a density closest to that of water?Explanation / Answer
1.e more vander waal interaction
2.a Easier to rotate in place
3.B greater weight
4.C more H bond
5.d : more polar bonds
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Hexanol has a boling point close to water.
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