Brian O'Neill
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Chemistry Quiz on Final Exam 5-7, created by Brian O'Neill on 12/13/2016.

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Brian O'Neill
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Final Exam 5-7

Final Exam 5-7

Question 1 of 42

1

An ionic bond is best described as

Select one of the following:

  • the sharing of electrons

  • the transfer of electrons from one atom to another

  • the attraction that holds the atoms together in a polyatomic ion

  • the attraction between 2 nonmetal atoms

  • the attraction between 2 metal atoms

Explanation

Question 2 of 42

1

A covalent bond is best described as

Select one of the following:

  • the sharing of electrons between atoms.

  • the transfer of electrons

  • a bond between a metal and a nonmetal

  • a bond between a metal and a polyatomic ion

  • a bond between two polyatomic ion

Explanation

Question 3 of 42

1

Write the name for Sn(SO4)2. Remember that Sn forms several ions

Select one of the following:

  • tin (I) sulfite

  • tin (IV) sulfate

  • tin sulfide

  • tin (II) sulfite

  • tin (I) sulfate

Explanation

Question 4 of 42

1

Give a possible molecular formula for C3H5ClO.

Select one of the following:

  • C6H10ClO2

  • C5H10Cl2O2

  • C6H10Cl2O2

  • C6H10O2

  • C6H12Cl2O2

Explanation

Question 5 of 42

1

Determine the name for TiCO3. Remember that titanium forms several ions

Select one of the following:

  • titanium (II) carbonate

  • titanium carbide

  • titanium carbonite

  • titanium (II) carbonite

  • titanium (I) carbonate

Explanation

Question 6 of 42

1

Give the correct formula for aluminum sulfate.

Select one of the following:

  • Al2SO4

  • Al(SO4)3

  • Al3(SO4)2

  • Al2(SO4)3

Explanation

Question 7 of 42

1

Calculate the molar mass of Ca3(PO4)2

Select one of the following:

  • 87.05 g/mol

  • 215.21 g/mol

  • 310.18 g/mol

  • 279.21 g/mol

  • 246.18 g/mol

Explanation

Question 8 of 42

1

How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99 g/mol.

Select one of the following:

  • 1.23 × 1023 O atoms

  • 2.96 × 1024 O atoms

  • 2.87 × 1025 O atoms

  • 1.10 × 1024 O atoms

  • 3.68 × 1023 O atoms

Explanation

Question 9 of 42

1

Calculate the mass percent composition of lithium in Li3PO4

Select one of the following:

  • 26.75 %

  • 17.98 %

  • 30.72 %

  • 55.27 %

  • 20.82 %

Explanation

Question 10 of 42

1

Determine the molecular formula of a compound that has a molar mass of 183.2 g/mol and an empirical formula of C2H5O2.

Select one of the following:

  • C2H5O2

  • C6H15O6

  • C3H7O3

  • C4H10O4

  • C8H20O8

Explanation

Question 11 of 42

1

Determine the empirical formula for a compound that contains C, H and O. It contains 52.14% C and 34.73% O by mass.

Select one of the following:

  • C2H6O

  • CHO

  • C4H13O2

  • CH4O3

  • CH3O

Explanation

Question 12 of 42

1

Draw the Lewis structure for S2⁻

Select one of the following:

  • True
  • False

Explanation

Question 13 of 42

1

Draw the Lewis structure for Ca2+

Select one of the following:

  • True
  • False

Explanation

Question 14 of 42

1

Draw the Lewis structure for N

Select one of the following:

  • True
  • False

Explanation

Question 15 of 42

1

Give the complete electronic configuration for Br-.

Select one of the following:

  • 1s22s22p63s23p64s24p6

  • 1s22s22p63s23p64s24d104p6

  • 1s22s22p63s23p64s23d104p6

  • 1s22s22p63s23p64s23d104p5

  • 1s22s2p63s2p64s23d104p6

Explanation

Question 16 of 42

1

Place the following in order of decreasing magnitude of lattice energy.
K2O Rb2S Li2O

Select one of the following:

  • Li2O > K2O > Rb2S

  • Li2O > Rb2S > K2O

  • Rb2S > K2O > Li2O

  • Rb2S > Li2O > K2O

  • K2O > Li2O > Rb2S

Explanation

Question 17 of 42

1

Use Lewis theory to determine the chemical formula for the compound formed between Rb and O

Select one of the following:

  • RbO

  • RbO2

  • Rb2O

  • Rb2O3

  • Rb3O2

Explanation

Question 18 of 42

1

What type of bonding is found in the compound HCl?

Select one of the following:

  • covalent bonding

  • hydrogen bonding

  • ionic bonding

  • metallic bonding

Explanation

Question 19 of 42

1

Which of the following is an ionic compound?

Select one of the following:

  • SBr2

  • Mg3(PO4)2

  • Cl2O

  • CH2O

  • PBr5

Explanation

Question 20 of 42

1

Give the name for PCl3

Select one of the following:

  • phosphorus trichloride

  • potassium trichloride

  • phosphorus (III) chloride

  • phosphorus (II) chloride

  • phosphorus chloride

Explanation

Question 21 of 42

1

A single covalent bond

Select one or more of the following:

  • 0 electron pairs

  • 1 electron pairs

  • 2 electron pairs

  • 3 electron pairs

  • is the shortest

  • 4 electron pairs

  • is the strongest

  • is the weakest

  • does not exist

  • is the longest

Explanation

Question 22 of 42

1

A double covalent bond

Select one or more of the following:

  • 0 electron pairs

  • 1 electron pairs

  • 2 electron pairs

  • 3 electron pairs

  • is the shortest

  • does not exist

  • is the longest

Explanation

Question 23 of 42

1

A triple covalent bond

Select one or more of the following:

  • 0 electron pairs

  • 1 electron pairs

  • 2 electron pairs

  • 3 electron pairs

  • is the shortest

  • 4 electron pairs

  • is the strongest

  • is the weakest

  • does not exist

  • is the longest

Explanation

Question 24 of 42

1

A quadruple covalent bond exists

Select one of the following:

  • True
  • False

Explanation

Question 25 of 42

1

Identify the compound with the largest dipole moment in the gas phase

Select one of the following:

  • LiF

  • HF

  • ClF

  • Cl2

Explanation

Question 26 of 42

1

Identify the compound with the smallest dipole moment in the gas phase

Select one of the following:

  • Cl2

  • ClF

  • HF

  • LiF

Explanation

Question 27 of 42

1

Draw the best Lewis structure for BeF2. State the EG, the MG, and the hybridization for your answer.

Select one of the following:

  • True
  • False

Explanation

Question 28 of 42

1

Using periodic trends, place the following bonds in order of increasing ionic character.
Si-P Si-Cl Si-S

Select one of the following:

  • Si-P < Si-Cl < Si-S

  • Si-P < Si-S < Si-Cl

  • Si-S < Si-Cl < Si-P

  • Si-Cl < Si-P < Si-S

  • Si-Cl < Si-S < Si-P

Explanation

Question 29 of 42

1

Give the number of valence electrons for ICl5.

Select one of the following:

  • 36

  • 40

  • 42

  • 44

  • 46

Explanation

Question 30 of 42

1

Draw the best Lewis structure for XeI2. State the EG, the MG, and the hybridization for your answer.

Select one of the following:

  • True
  • False

Explanation

Question 31 of 42

1

Draw the best Lewis structure for SF4. State the EG, the MG, and the hybridization for your answer.

Select one of the following:

  • True
  • False

Explanation

Question 32 of 42

1

Draw the best Lewis structure for NO3⁻. State the EG, the MG, and the hybridization for your answer

Select one of the following:

  • True
  • False

Explanation

Question 33 of 42

1

Which of the following resonance structures for OCN⁻ will contribute most to the correct structure of OCN⁻? (LP=lone pair)

Select one of the following:

  • O(2 LP’s) C N (2 LP’s)

  • O(1 LP) C-N(3 LP’s)

  • O(1 LP) C(2 LP’s) N(1 LP)

  • O(3 LP’s)—C N(with 1 LP)

  • They all contribute equally to the correct structure of OCN⁻

Explanation

Question 34 of 42

1

Place the following in order of increasing F-A-F bond angle, where A represents the central atom in each molecule.

Select one of the following:

  • PF3 < OF2 < PF4⁺

  • OF2 < PF4⁺ < PF3

  • PF4⁺ < OF2 < PF3

  • PF4⁺ < PF3 < OF2

  • OF2 < PF3 < PF4⁺

Explanation

Question 35 of 42

1

How many of the following molecules are polar?
PCl5 COS XeO3 SeBr2

Select one of the following:

  • 2

  • 1

  • 0

  • 4

  • 3

Explanation

Question 36 of 42

1

Give the hybridization for the O in OF2. State the EG and the MG for your answer

Select one of the following:

  • True
  • False

Explanation

Question 37 of 42

1

Give the hybridization for the Br in BrF5. State the EG and the MG for your answer

Select one of the following:

  • True
  • False

Explanation

Question 38 of 42

1

Fill the blank spaces to complete the text.

A single covalent bond has sigma and pi bonds

Explanation

Question 39 of 42

1

Fill the blank spaces to complete the text.

A Double covalent bond has sigma and pi bonds

Explanation

Question 40 of 42

1

Fill the blank spaces to complete the text.

A triple covalent bond has sigma and pi bonds

Explanation

Question 41 of 42

1

Describe a pi bond

Select one of the following:

  • side by side overlap of parallel p orbitals

  • s orbital overlapping with the end of a d orbital

  • end to end overlap of p orbitals

  • overlap of two d orbitals

  • p orbital overlapiing with an f orbital

Explanation

Question 42 of 42

1

describe a sigma bond

Select one of the following:

  • end to end overlap of p orbitals

  • s orbital overlapping with the side of a p orbital

  • overlap of two d orbitals

  • p orbital overlapping with an f orbital

Explanation

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