Atomic Structure and Periodic Table
Solutions
Bonding
Thermodynamics
Toss Up
100
What are the horizontal row of the periodic table called?
periods
100
What is (moles of solute)/(kilograms of solvent)?
molality
100
What happens with the electrons in a covalent bond?
they are shared
100
If ΔH is negative, is the reaction exothermic or endothermic?
exothermic
100
Define isoelectronic
any 2 substances that have identical e- configurations
200
What is the abbreviated configuration for Mg
[Ne]3s2
200
What is the color of NiCl2 in solution?
green
200
What is the name of the orbital set with this geometry and sp hybridization?
linear
200
What happens to the entropy in a reaction where the moles of gaseous substances increases?
it increases
200
Identify this equation and give the meaning of each symbol c=λv
c = speed of light
λ = wavelength
v= frequency
300
The Bohr model is true for only what element?
hydrogen
300
What the precipitant when aqueous ammonium chloride reacts with aqueous silver nitrate.
AgCl
300
What is the name of the orbital set with this geometry and sp2 hybridization?
trigonal planar
300
What is the spontaneity of a process when both ΔS and ΔH are negative?
spontaneous at only low temperatures
300
The order of the following reaction is:Rate = k[A][B]2
3
400
What theory did Max Planck develop?
quantum theory
400
Which of the following is insoluble?
NH4OH, NaOH, Al(OH)2, Ba(OH)2
Al(OH)2
400
What do you call the attractive force resulting when polar molecules line up so that the positive and negative ends are close to each other?
dipole-dipole attraction
400
At what conditions is a process spontaneous at only high temperatures (are ΔS and ΔH positive, negative, etc.)?
ΔS is positive, ΔH is positive
400
Describe what an elementary reaction is?
Chemical equation happens in a single step. Usually unimolecular or bimolecular. Coefficients are used to determine rate law.
500
Which of the following elements have the biggest first ionization energy?
Na, Mg, Al, Si
silicon
500
What is the solubility product(Ksp) of this reaction?
Ag2CrO4(s) <--> 2Ag+(ap) + CrO42-(aq)
Ksp = [Ag+]+[CrO42-]
500
What is the name of the orbital set with this geometry and dsp3 hybridization?
trigonal bipyrimidal
500
What does the symbol,
ΔHf°
represent?standard enthalpy of formation
500
Define specific heat
amount of heat that is required to raise the temperature of 1 gram of substance by 1 degree celsius