CHEM 230 (ALTAMIRANO) FINAL EXAM QUESTIONS AND ANSWERS

CHEM 230 (ALTAMIRANO) FINAL EXAM QUESTIONS AND ANSWERS

Give the ground state electron configuration for I - Answers [Kr]5s^2, 4d^10, 5p^5

Which of the following is a strong acid?

A. CH3NH2

B. CH3O-

C. H2N-

D. CH3OH

E. CH3NH3+ - Answers E. CH3NH3+

A molecule of acetonitrile CH3Ch2Ch contains ____ sigma bonds and ____ pi bonds - Answers 8
sigma

2 pi

Which acid forms a weaker conjugate base?

A. H3COOH

B. H3CNH3 - Answers A. H3COOH

Which molecule listed below is a polar molecule?

A. NH3

B. H2O

C. HCN - Answers A. NH3

B. H2O

C. HCN

Which of the following pairs of bases lists the stronger base first?

A. I- > Cl-

B. CH3Coo- > HO-

C. H2N- > CH3COO-

D. H2N- > CH3COO-

E. H2) > HO- - Answers D. H2N- > CH3COO-

, Identify the compound with the highest pKa.

A. CH3NH2

B. CH2OH

C. H2O

D. CH3NH3+

E. CH3COOH - Answers A. CH3NH2

How many tertiary carbons are present in 2,4-dimethylhexane?

A. 6

B. 2

C. 0

D. 8

E. 1 - Answers B. 2

When methanol (CH3OH) acts as an acid, its conjugate base is...?

A. CH4OH

B. CH4O+

C. CH3OH2+

D. CH3O-

E. -CH2OH - Answers D. CH3O-

What orbitals overlap to create the C-H bone in ethyne (HC=-CH)

A. s-sp

B. s-sp3

C. s-p

D. p-p

E. s-sp2 - Answers A. s-sp

Draw the lewis structure for H3O+. what is the hybridization on the O atom?