$$k = \frac{0.693}{10}$$ \text{ years}^{-1}$

$$1\ \mathrm{eV} = 1.602 \times 10$$^{-19}$$\ \mathrm{J}$$

Question 1

Which of the following compounds is an aromatic hydrocarbon?

Accepted Answer

Benzene

Question 2

What is the correct IUPAC name for the compound with the formula $$\mathrm{CH_3CH_2CH_2OH}$$?

Accepted Answer

Propanol

Question 3

Which functional group is present in the compound $$\mathrm{CH_3COOH}$$?

Accepted Answer

Carboxylic acid

Question 4

Which type of isomerism is exhibited by cis-2-butene and trans-2-butene?

Accepted Answer

Geometric isomerism

Question 5

A compound undergoes a reaction where water is removed and a new bond is formed between two molecules. What type of reaction is this?

Accepted Answer

Condensation

Question 6

Which of the following is the correct expanded nuclear notation for an atom of carbon-14?

Accepted Answer

$$^{14}_{6}\mathrm{C}$$

Question 7

Which nuclear decay process increases the atomic number by one while keeping the mass number unchanged?

Accepted Answer

Beta-minus decay ($$\beta^-)$$

Question 8

A nuclide has a high N/Z ratio compared to the band of stability. Which type of nuclear decay is it most likely to undergo?

Accepted Answer

Beta-minus decay ($$\beta^-)$$

Question 9

Which of the following is the correct equation for first-order nuclear decay kinetics?

Accepted Answer

$$N = N_0$ e$$^{-kt}$$

Question 10

If the half-life ($$T_{1/2}) of a $$radioactive isotope is 10 years, what is the decay constant ($$k$$)?

Accepted Answer

$$k = \frac{0.693}{10}$$ 	ext{ years}^{-1}$

Question 11

Which of the following is a correct nuclear reaction equation for the beta-minus decay of $$^{14}_{6}\mathrm{C}$$?

Accepted Answer

$$^{14}_{6}\mathrm{C} \$$rightarrow ^{14}$$_{7}\mathrm{N} + \beta^- + \bar{
u}$$

Question 12

Which functional group is present in the compound with the structure $$\mathrm{R-CO-R'}$$?

Accepted Answer

Ketone

Question 13

Which of the following is a real-life example of a substitution reaction?

Accepted Answer

Chlorination of methane to form chloromethane

Question 14

Which of the following is a structural isomer of butane ($$\mathrm{C_4H_{10}}$$)?

Accepted Answer

2-methylpropane

Question 15

Which of the following statements about magic numbers in nuclear chemistry is correct?

Accepted Answer

Magic numbers correspond to numbers of protons or neutrons that confer extra stability to nuclei.

Question 16

A radioactive isotope decays with a half-life of 5 hours. If you start with 80 g, how much remains after 15 hours?

Accepted Answer

10 g

Question 17

Which of the following is the correct conversion between electron volts and joules?

Accepted Answer

$$1\ \mathrm{eV} = 1.602 	imes 10$$^{-19}$$\ \mathrm{J}$$

Question 18

Which oxygen-containing functional group is found in aspirin (acetylsalicylic acid)?

Accepted Answer

Ester

Question 19

Which of the following best describes the nuclear reaction: $$^{238}_{92}\mathrm{U} \$$rightarrow ^{234}$$_{90}\mathrm{Th} $$+ ^{4}$$_{2}\alpha$$?

Accepted Answer

Alpha decay

Unit 4 Study Guide: Organic Chemistry, Coordination Compounds, and Nuclear Chemistry

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