Reaction type and balance reaction equation What is the reaction type of the following reaction? And what is/are the product(s) of this reaction? AlBr3 + Pb(NO3)2 ---------->
- Reaction type and balance reaction equation
What is the reaction type of the following reaction? And what is/are the product(s) of this reaction?
AlBr3 + Pb(NO3)2 ---------->
2. Oxidation state and
What is the oxidation state of Cl in NaClO3? What is the reducing agent in this reaction? What element is reduced?
NaClO3 ⟶ NaCl + O2
3. Balance reaction equation:
Please balance the following reaction. What is the coefficient for O2?
KMnO4 ⟶ K2MnO4 + MnO2 + O2
4. Stoichiometry
Based on the following reaction, how many gram of AgCl can be made from 20 mL of 3.0 M AgF solution? Assume CaCl2 is excess.
2 AgF + CaCl2 ⟶ 2 AgCl + CaF2
5. Reaction yield
Able to calculate reaction yield.
A student carried out the reaction in question 4, and obtained 7.2 g of AgCl. What is the reaction yield?
6. Quantum numbers
Understand the four quantum numbers and able to assign them to a certain electron or certain orbital. For example:
What are the four quantum numbers for the valence electron of cesium?
7. Atomic absorption and emission
Understand atomic absorption and emission. Able to use
Which of the following electronic transition would emit a photon with the longest wavelength?
a. n = 1 ⟶ n = 5
b. n = 4 ⟶ n = 3
c. n = 2 ⟶ n = 1
8. Wavelength calculation
What is the frequency of a photon with a wavelength of 246 nm?
9. Electron configuration
Able to determine the number of unpaired electrons.
What is the electron configuration of Pb2+ in both spdf format and noble gas format?
10. Periodic trend:
Arrange the following atoms in order of decreasing atomic radius:
S, Cl, and Te
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