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

    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