Questions from Organic Chemistry

Q: Compare the structures of cyclohexane and 2-methyl-2-

Compare the structures of cyclohexane and 2-methyl-2-pentene. a. What is the molecular formula of each compound? b. What is the HDI of each compound? c. Can high-resolution mass spectrometry be use...

Q: The mass spectrum of 1-ethyl-1-methylcyclohexane shows

The mass spectrum of 1-ethyl-1-methylcyclohexane shows many fragments, with two in very large abundance. One appears at m/z = 111 and the other appears at m/z = 97. Identify the structure of each of t...

Q: How many signals are expected in the 1H NMR spectrum of each

How many signals are expected in the 1H NMR spectrum of each of the following compounds?

Q: The mass spectrum of 2-bromopentane shows many fragments.

The mass spectrum of 2-bromopentane shows many fragments. a. A fragment appears at M−15. Would you expect a signal at M−13 that is equal in height to the M−15 peak? Explain. b. One fragment appears...

Q: When treated with a strong base, 2-bromo-2

When treated with a strong base, 2-bromo-2,3-dimethylbutane will undergo an elimination reaction to produce two products. The choice of base (ethoxide vs. tert-butoxide) will determine which of the tw...

Q: Propose a molecular formula that fits the following data: a

Propose a molecular formula that fits the following data: a. A hydrocarbon (CxHy) with a molecular ion peak at m/z = 66. b. A compound that absorbs IR radiation at 1720 cm−1 and exhibits a molecular...

Q: The following is a mass spectrum of octane. a.

The following is a mass spectrum of octane. a. Which peak represents the molecular ion? b. Which peak is the base peak? c. Draw the structure of the fragment that produces the base peak.

Q: Draw a mechanism and predict the major product of the following reaction

Draw a mechanism and predict the major product of the following reaction:

Q: Calculate the HDI for each molecular formula. a. C4H6

Calculate the HDI for each molecular formula. a. C4H6 b. C5H8 c. C40H78 d. C72H74 e. C6H6O2 f. C7H9NO2 g. C8H10N2O h. C5H7Cl3 i. C6H5Br j. C6H12O6

Q: Propose two possible structures for a compound with the molecular formula C5H8

Propose two possible structures for a compound with the molecular formula C5H8 that produces an IR signal at 3300 cm−1.