Precipitation and Molarity
Difference between total ionic and net ionic equation
A net ionic equation shows only the elements and compounds that are involved in a
Define oxidation and reduction
Oxidation is the loss of electrons and Reduction is the gain of electrons
Calculate the frequency of blue light having a wavelength of 350 cm
8.57 x 107 Hz
How many nodes are in P, S, F, and D orbital
P = 2, S = 1, F = 8, D = 4
Write the condensed electron configuration for Cu
[Ar]4s13d10
Does a precipitate form for this chemical equation: AgNO3(aq) + KCl(aq) →
Answer: Yes
AgCl(s) + KNO3(aq)
MnO2 (Find the oxidation number of Mn)
+4
What is the energy of a photon with a wavelength of 200 cm?
9.939 x 10-26 J
Determine the sublevels for 3
s, p , d
What is the pOH of a 0.0235 M HCl solution?
12.371
How many grams of hydrogen chloride (HCl) are required to prepare 500 mL of 5M HCl in water?
91.25 g HCl
Determine what is being oxidized and what is being reduced: 2HCl (aq) + Zn (s) → H2 (g) + ZnCl2 (aq)
Oxidized is Zn
Reduced is H in HCl
Determine the wavelength of light emitted when an electron of an helium atom makes a transition from orbital 3 to orbital 6
1.094 x 10-6
Given the information find the n, l, and ml: 4d
n=4, l = 2, ml = -2, -1, 0, 1, 2
Is there something called a 1d or 2d orbital?
No
Using the chemical equation how many grams of HCl is required to neutralize 20.0 mL of 0.5 mol NaOH? HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
0.365 g HCl
Balance the chemical equation and determine what is being oxidized and what is being reduced: AlCl3 (aq) + Mg (s) → Al (s) + MgCl2 (aq)
2AlCl3 (aq) + 3Mg (s) → 2Al (s) + 3MgCl2 (aq)
Oxidized is Mg
Reduced is Al in AlCl3
When an electron absorbs -4.0 x 10-35 J of energy and ascends from energy level 2, what energy level does the electron end at?
2
Write a set of quantum number for 3p
n=3, l = 1, ml = -1, 0, 1
Give the definitions for Aufbau principle, Pauli exclusion principle, and Hund's rule
Aufbau Principle: Lower energy orbitals fill first
Pauli Exclusion principle: Degenerate orbitals (those of the same energy) are filled with electrons until all are half-filled before pairing up of electrons
Hund's rule: Individual orbitals only hold two electrons, and each should have a different spin