VSEPR/MO
Which of the following molecules contains a dipole moment? BF₃, CF₄, or NF₃
NF₃
Assign oxidation numbers to each of the atoms in Ca(NO₃)₂.
○ Ca= +2
○ N= +5
○ O= -2
How many moles of compound are in 78.25 g of CO₂?
1.78 moles
How many pi bonds are in CH₂O?
1
Which of the following products will produce a precipitate; Hg₂SO₄, KOH, HNO₃?
Hg₂SO₄
What is the molecular geometry and bond angles of KrF2?
Linear, 180
Identify the oxidizing and reducing agents in the redox reaction below. Cu + 2Ag⁺ → 2Ag + Cu²⁺
Reducing agent: Cu, oxidizing agent: Ag⁺
How many hydrogen atoms are present in 76.45 g of ammonium sulfate?
2.79E24 atoms
What is the formula for bond order?
Bond order = (bonding electrons)- (antibonding electrons) * ½
How many moles of solid copper can be formed by the reaction of 4.59 g of CuO and 2.73 g of C in the following reaction? CuO + C → Cu + CO₂
0.058 moles Cu
What is the bond order of XeF⁻?
0
Balance the following redox reaction: Zn + H₂SO₄ -> ZnSO₄ + H₂
Zn + H₂SO₄ -> ZnSO₄ + H₂
Which of the following compounds has a greater mass percent of carbon: C₁₂H₂₂O₁₁ or C₈H₁₀N₄O₂?
C₈H₁₀N₄O₂
What is an oxidizing agent in a redox reaction?
The substance that “does” the oxidation of the oxidized chemical substance
What mass of solid AgBr is produced when 100.0 mL of 0.150 M AgNO₃ is added to 20.0 mL of 1.00 M NaBr?
2.82 g AgBr
Which of the following compounds are paramagnetic? CO, CO⁺, CO²⁺
CO⁺
Balance the following redox reaction: PbO + NH₃→ N₂ + Pb
3PbO + 2NH₃→ N₂ + 3H₂O + 3Pb
A compound that contains only carbon, hydrogen, and oxygen is 48.64% C and 8.16% H by mass. What is the empirical formula of this substance?
C₃H₆O₂
What is the difference between diamagnetic and paramagnetic?
Paramagnetic: substance is attracted to magnetic field, unpaired electrons in MO orbital
Diamagnetic: substance is repelled from the magnetic field, paired electrons in MO orbital
What volume in mL of 0.0521 M Ba(OH)₂ is required to neutralize exactly 14.20 mL of 0.141 M H₃PO₄?
57.6 mL
Name all of the hybrid orbitals and how many bonding groups they are associated with.
Sp: 2 bonding groups
Sp²: 3 bonding groups
Sp³: 4 bonding groups
Dsp³: 5 bonding groups
D²sp³: 6 bonding groups
Balance the following redox reaction: Cr₂O₇²⁻ + C₂H₅OH →Cr³⁺ + CO₂
16H⁺ + 2Cr₂O₇²⁻ + C₂H₅OH → 4Cr³⁺ + 2CO₂ + 11H₂O
A given sample of a xenon fluoride compound contains molecules of the type XeFn , where N is some whole number. Given that 9.033 x 10²⁰ molecules of XeFn weigh 0.368 g, determine the value for N in the formula.
n=6
Predict the products and determine the net ionic equation for the following: AgNO3(aq)+ CaCl2 (aq) ->
(Hint: the reaction must be balanced to be correct)
2Ag+(aq) + 2Cl-(aq) -> 2AgCl(s)
DAILY DOUBLE
Basic