this is a free response question from an old AP chem exam that i need to be familiar with for my final tomorrow.
Account for each of the following in terms of atomic theory and/or quantum theory:
1. Atomic size increases from Na to Cl in the periodic table
2. Boron commonly forms molecules of the type BX3. These molecules have a trigonal planar structure.
3. The first ionization energy of K is less than that of Na.
4. Each element displays a unique gas-phase emission spectrum.
basically the question is just asking to explain concepts but i'm rather unsure about how to answer each part. any help would be appreciated!
Im stuck on this question....
A buffer is formed by mixing 0.396M trimethylamine, (CH3)3N and 0.190M trimethylammonium bromide, (CH3)3NHBr.
A) What is the pH of the Buffer.
B) What is the pH of the buffer after 1mL of .02M NaOH is added (ignore volume changes)
1 chemical equation
2 word equation
5 single replacement (general equation)
6 double replacement (general equation)
7 (general equation)
8 analysis (general equation)
A. result of a reaction
B. substances that interact
C. AB → A + B
D. A + B → AB
F. A + BC → B + AC
G. settles out of solution
H. hydrogen plus oxygen yields water
I. AB + CD → CB + AD
J. 2H2 + O2 → 2H2O
i think 5:F and 6:I