Sort the following in order of increasing acidity in aqueous
solution. Explain your reasoning. (You can...
Sort the following in order of increasing acidity in aqueous
solution. Explain your reasoning. (You can check your results by
finding the pKa, but this will not be considered a valid
explanation).
Sort the following in order of increasing acidity in aqueous
solution. Explain your reasoning. (You can check your results by
finding the pKa, but this will not be considered a valid
explanation).
HCrO4 - HSO4 - HSO3 - HClO4
Arrange the following compounds in order of increasing acidity,
and explain the reasons for your choice of order: cyclopentanol,
phenol, p-nitrophenol, and 2- chlorocyclopentanol.
Order these chemical species by increasing pH of an 0.1M aqueous
solution of each. That is, imagine making an 0.1M solution of each
species. Select 1 next to the species that makes the solution with
the lowest pH. Select 2 next to the species that makes the solution
with the next higher pH, and so on. Notice that some of the
rankings have been filled in for you already. Also notice that
water is on the list. For that particular...
Order these chemical species by increasing pH of an 0.1M aqueous
solution of each. That is, imagine making an 0.1M solution of each
species. Select 1 next to the species that makes the solution with
the lowest pH. Select 2 next to the species that makes the solution
with the next higher pH, and so on. Notice that some of the
rankings have been filled in for you already. Also notice that
water is on the list. For that particular...
Arrange the following in the order of increasing acidity. List
the most acidic last.
CH3OH
CH3CO2H
CH3CH2CH2CH3
If given a table of acids and their pKas, how do you determine
which acid is stronger, especially when the table does not have the
compounds that are above listed on the table?
Here is a chart of the table given.
HCl pKa= -7. CH3CO2H pKa= 4.8. H2O pKa= 15.7. CH3CH2OH pKa= 16.
CHCH pKa= 25. H2 pKa= 35. H2NH pKa= 38. CH2CH2...
Arrange the 0.15 M solutions of the
following compounds in order of increasing acidity (least acidic
first).
NH4I
B.
CH3COONH4
C.
CH3COOK
D.
KCl
E.
CH3COOH
F.
KF
G.
HBr
H.
CHCl2COOH
I.
NH3
J. CF3COOH
ammonia,
Kb = 1.80
Sort the following titrations in order of increasing pH at the
equivalence point.
LiOH tirated with HI, C5H5N titrated with HCl, HCN titrated with
Ca(OH)2, HNO2 titrated with NaOH, CH3NH2 titrated with
HBr
1) Order the following compounds in order of elution in gas
chromatography. Explain your reasoning. (Label
“1stEluted”, 2ndEluted, and so
on).
Mobile Phase – Air (Flow Rate = 25 mL/min), Stationary Phase –
poly(dimethylsiloxane),
Oven Temperature – 90 oC.
1-butanol, 1-pentanol, 1-hexanol, pentane
b) How would a gradient elution (55 oC – 120
oC) impact the chromatogram?
order the following aqueous solutions in the order of increasing
osmotic pressure.
0.100 M NiBr3
0.100 M MgSO4
0.150 M Na2SO4
0.150 M NH4NO3
0.250 M fructose
If you can explain your reasoning that will be appreciated.
You have been trapped in a building with 3 hallways, and each of
them can lead to freedom.
Unfortunately for you, each of these 3 hallways has 2 doors.
Each of the six doors could be
locked or unlocked independent of any other door. To be able to
escape to
freedom through a particular hallway, you require that both the
doors in that hallway are
unlocked.
The doors in hallway...