Hybridization and MO Theory
What is the hybridization of BrF3?
sp3d
Balance the following equation: C4H10 + O2 → CO2 + H2O. What is the sum of the coefficients (including any implied 1’s) after the reaction is balanced with the smallest number of whole numbers?
33
You have a stock solution of hydrochloric acid (HCl) with a concentration of 6.0 M. You need to prepare 250 mL of a 1.5 M HCl solution for a lab experiment. How many liters of the 6.0 M stock solution should you use?
0.0625 L
In each case two aqueous solutions are mixed. In which one will NO precipitate form?
a) Lithium carbonate and lead(II) nitrate
b) Iron(II) acetate and sodium phosphate
c) Nickel(II) chloride and potassium sulfate
c) Nickel(II) chloride and potassium sulfate
Which of the following is NOT true?
a) The relatively low boiling point of rubbing alcohol is a physical property.
b) Dissolving sugar into hot tea is a chemical change.
c) Burning propane in a stove is a chemical change.
d) Crushing a rock into fine powder is a physical change.
e) The density of mercury is a physical property.
b) Dissolving sugar into hot tea is a chemical change.
What is the hybridization of SF2?
sp3
Strontium nitrate reacts with ammonium phosphate to produce strontium phosphate and ammonium nitrate. What is the sum of the coefficients (including any implied 1’s) after the reaction is balanced with the smallest number of whole numbers?
12
What mass of sodium sulfate is needed to prepare 175.0 mL of a solution with a sodium ion concentration of 0.125 M?
1.55 g
In each case two aqueous solutions are mixed. In which one will NO precipitate form?
a) Copper(II) nitrate and calcium sulfide
b) Ammonium sulfate and strontium chloride
c) Sodium chloride and potassium nitrate
c) Sodium chloride and potassium nitrate
Name the six strong acids.
H2SO4, HI, HBr, HNO3, HCl, HClO4
SO4 I Brought NO3 Clean ClO4thes
What hybridization is used for seesaw molecular geometry?
sp3d
In the reaction of solid iron with carbon dioxide to form iron(III) oxide and carbon monoxide, how many grams of carbon dioxide are required to completely react with 250 grams of iron?
296 g CO2
What is the molarity of potassium ions in the solution formed by mixing 75.0 mL of 0.400 M potassium phosphate with 125 mL of 0.600 M potassium sulfate?
1.2 M
What is the sum of the coefficients (including implied 1’s) for the balanced net ionic equation for the reaction of sodium carbonate and calcium nitrate?
Which of the following is a weak electrolyte in aqueous solution?
a) ammonium carbonate
b) hydrofluoric acid
c) CH3CH2OH
d) CO2
e) HClO4
b) hydrofluoric acid
Draw the best Lewis structure for C2H4 and determine the hybridization bonding scheme of the bond between the carbons.
σ: C(sp2)-C(sp2)
π: C(p)-C(p)
The rocket fuel, B5H9 (63.14 g/mol) is combusted according to the following unbalanced equation. A container initially has 126 g of B5H9 and 192 g of oxygen. Balance the equation and then calculate the mass of water that can be produced when the reaction goes to completion. B5H9 + O2 -> B2O3 + H2O
81.1 g
What volume of 0.350 M lead(II) nitrate solution is required to completely react with 65.0 mL of 0.100 M aluminum chloride solution?
Balance first: _ Pb(NO3)2(aq) + AlCl3(aq) →_PbCl2(s) + _ Al(NO3)3(aq)
27.9 mL
What is the sum of the coefficients (including implied 1’s) for the balanced net ionic equation for the reaction of sodium phosphate and nickel(II) chloride?
6
Which of the following acids is named INCORRECTLY? a) HBrO hypobromous acid
b) H2S hydrosulfuric acid
c) HBr hydrobromic acid
d) HClO2 chloric acid
e) H3PO4 phosphoric acid
d) HClO2 chloric acid
Determine if B2 is paramagnetic or diamagnetic and calculate its bond order.
paramagnetic
bond order: 1.0
Lithium metal reacts with nitrogen gas to form lithium nitride. Write a balanced equation for this reaction. What is the percent yield if 52.05 g of lithium and 42.01 g of nitrogen produced 71.0 g of lithium nitride in the reaction?
81.5%
A student prepared a stock solution by dissolving 138.0 g of solid potassium phosphate in enough water to make 500 mL of solution. What volume of this potassium phosphate stock solution is needed to create 250.0 mL of solution with a potassium ion concentration of 0.800 M?
51.3 mL
What is the sum of the coefficients (including implied 1’s) for the balanced complete ionic equation for the reaction of aqueous barium bromide with aqueous aluminum sulfate?
25
If you combined the two compounds listed, which of following would NOT produce a gas?
a) HNO3 and Na2CO3
b) HCl and Li2SO3
c) NH4NO3 and KOH
d) HBr and NaOH
d) HBr and NaOH