Question 1

Which of the following best describes the geometry and bond angles of methane ($$\mathrm{CH_4$}$$)?

Accepted Answer

Tetrahedral, $$109.5^\circ$$

Question 2

What is the correct IUPAC name for the compound shown below?

$$\mathrm{CH_3CH_2CH(CH_3$)CH_2CH_3}$$

Accepted Answer

2-methylpentane

Question 3

Which of the following statements about the acidity of $$\mathrm{HCl}$$, $$\mathrm{HBr}$$, and $$\mathrm{HI} is $$correct?

Accepted Answer

$$\mathrm{HI} is $$more acidic than $$\mathrm{HBr}$$

Question 4

Which orbital hybridization is found in acetylene ($$\mathrm{C_2H_2}$$)?

Accepted Answer

$$sp$$

Question 5

What is the major product of the reaction between $$\mathrm{HCl}$$ and water?

Accepted Answer

$$\mathrm{Cl^-}$$ + \mathrm{H_3O^+}$

Question 6

Which of the following is the strongest acid based on $$K_a$$ values?

Accepted Answer

$$K_a \u003e 1$$

Question 7

Which of the following molecules exhibits ion-dipole interactions with water?

Accepted Answer

$$\mathrm{NaCl}$$

Question 8

What is the correct formula for calculating the index of hydrogen deficiency (IHD) for a compound?

Accepted Answer

$$\mathrm{IHD} = \frac{2C + 2 + N - H - X}{2}$$

Question 9

Which of the following is a correct statement about resonance structures?

Accepted Answer

Resonance structures differ only in the arrangement of electrons

Question 10

Which of the following is the correct order of acidity for the following compounds: $$\mathrm{H_2SO_4}$$, $$\mathrm{CH_3COOH}$$, $$\mathrm{H_2O}$$?

Accepted Answer

$$\mathrm{H_2SO_4} \u003e \mathrm{CH_3COOH} \u003e \mathrm{H_2O}$$

Question 11

Which of the following is the correct geometry for ammonia ($$\mathrm{NH_3$}$$)?

Accepted Answer

Trigonal pyramidal

Question 12

What is the major product when 2-bromopentane reacts with sodium iodide in acetone?

Accepted Answer

2-iodopentane

Question 13

Which of the following is a correct statement about the stability of conjugate bases?

Accepted Answer

A more stable conjugate base is more acidic

Question 14

Which of the following is the correct formula for the acid dissociation constant ($$K_a) $$for $$\mathrm{HA}$$?

Accepted Answer

$$K_a = \frac{[H^+][A^-]}{[HA]}$$

Question 15

Which of the following best describes the interaction between $$\mathrm{Cl^-}$$ and water?

Accepted Answer

Ion-dipole interaction

Question 16

Which of the following is the correct order of bond strength for single, double, and triple bonds?

Accepted Answer

Triple \u003e Double \u003e Single

Question 17

Which of the following is the correct structure for dimethyl ether?

Accepted Answer

$$\mathrm{CH_3OCH_3}$$

Question 18

Which of the following is the correct definition of a chiral center?

Accepted Answer

A carbon atom attached to four different groups

Question 19

Which of the following is the correct order of chemical shift values in $$^{13}\mathrm{C}$$ NMR for the following groups: alkane, alkene, carbonyl?

Accepted Answer

Alkane \u003c Alkene \u003c Carbonyl

Organic Chemistry Study Notes: Structure, Bonding, Acids/Bases, Functional Groups, and Stereochemistry

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