CHEM125 – REVIEW ACS II

REVIEW ACS II

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Question 1

An ionic substance typically exhibits all of the following properties except Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 2

The Lewis structure for Sulfur dioxide can be described by two resonance structures: These resonance structures indicates that the Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 3

Which concept(s) explain why the water molecule is bent and that the angle is about 105º? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 4

Which statement is incorrect about the boiling points for the 6A hydrides: H2O, H2S, H2Se, and H2Te Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 5

A compound consisting of an element having a low ionization energy and a second element having a large electronegativity is likely to have Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 6

Which of the following molecules is nonpolar? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 7

The molecule of the type ML4E2 consists of four single bonds and two lone pairs. What structure is it expected to assume? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 8

The shape that most closely describes the H2S molecule is Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 9

In which pair are the molecules geometrically similar? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 10

Which molecule is planar? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 11

What set of species is arranged in order of increasing S-N-S bond angle? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Remember lone pairs of electrons are bulkier than bonding pairs.

Question 12

What type of hybrid orbital is used in PCl5? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 13

The molecule OCNH (shown below) has been detected in gas clouds between stars. The predicted O-C-N bond angle is about Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 14

Which element is most likely to form two bonds? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 15

How many sigma bonds and pi bonds are in this structure? Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 16

Arrange the nitrogen-nitrogen bond lengths in order from shortest to longest for N2, N2H2, N2H4. Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 17

What is the formal charge on carbon for the following incorrect Lewis structure Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 18

What is the formal charge on the right oxygen for the following incorrect Lewis structure Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 19

Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 20

MA2B2 is a molecule where M is the central atom bonded to 2 atoms of A and 2 atoms of B. The fact that it exists in only one form (no isomers) suggests its geometry is Select one: chem125-acsii - Fluff Butt Reviews

Explanation

Question 21

Which compound would be expected to have the largest dipole moment? Select one: chem125-acsii - Fluff Butt Reviews

Explanation