Periodic Trends
An atom of which of the following elements has the largest atomic radius: Li, F, K, or Br?
What is K?
A pure sample of which molecule will experience hydrogen bonding?
A) CO2
B) CH4
C) H2S
D) NH3
What is NH3?
Which of these compounds will form a basic solution? A) NaF
B) NH4Cl
C) KCl
D) LiBr
What is NaF?
For the reaction given, how will adding a solution of AgNO3 affect the equilibrium (knowing Ag+ reacts with OH- to form insoluble AgOH)?
It will shift left, causing more calcium hydroxide to dissolve
Which element has the highest first ionization energy?
What is helium?
As IMF strength increases, what happens to vapor pressure?
It decreases
Which of these acids is polyprotic?
A) Sulfuric acid
B) Nitric acid
C) Hydrochloric acid
D) Hydrobromic acid
What is sulfuric acid?
(1) 2 HI <-> H2 + I2
(2) 1/2 H2 + 1/2 I2 <-> HI
If the value of Keq for reaction (1) is 500, what is the value of Keq for reaction (2)?
What is the square root of 1/500 (about 0.0447)?
Which of the following bonds is the most polar?
A) C-F
B) C-Br
C) C-I
What is C-F?
Which of the following gases would deviate the most from ideal behavior?
A) N2
B) CO2
C) Xe
D) Ar
What is Xe?
What volume of 0.50 M acetic acid is required to reach the equivalence point when titrated with 10.0 mL 1.0 M NaOH?
What is 20.0 mL?
For an exothermic equilibrium reaction, what happens to the value of K when the temperature is increased?
It decreases
Which bond is stronger, Na-Br or K-Br?
What is Na-Br?
What is butanol?
Which of the following solutions will NOT form a buffer?
A) 100 mL 0.5 M HF and 100 mL 0.5 M KF
B) 50 mL 0.5 M HCN and 50 mL 0.5 M NaOH
C) 100 mL 0.5 M HCH3COO and 100 mL 0.5 M NaCH3COO
D) 50 mL 1.0 M H2SO3 and 50 mL 0.5 M NaOH
What is 50 mL 0.5 M HCN and 50 mL NaOH?
MgF2 <-> Mg2+ + 2 F-
Ksp = 6.4 x 10-9
For the given reaction and Ksp, what is the molar solubility of F-?
What is 2.3 x 10-3 M?