Chemistry, 04.03.2020 23:17 jayleneeurich
A 0.10 M imidazole solution has a pH of 6.6. To the nearest hundredth of a unit, what fraction of the molecules are in the neutral (imidazole) form? (The pKa of the imidazolium ion is 6.0.)
Answers: 3
![pH=pK_a+\log \frac{[Salt]}{[Acid]}](/tpl/images/0533/8426/e961a.png)
![pH=pK_a+\log \frac{[\text{Imidazole}]}{[\text{Imidazolium ion}]}](/tpl/images/0533/8426/c2e7e.png)
![6.6=6.0+\log \frac{[\text{Imidazole}]}{[\text{Imidazolium ion}]}](/tpl/images/0533/8426/895b0.png)
![\frac{[\text{Imidazole}]}{[\text{Imidazolium ion}]}=10^{6.6-6.0}](/tpl/images/0533/8426/0952e.png)
![\frac{[\text{Imidazole}]}{[\text{Imidazolium ion}]}=10^{0.6}](/tpl/images/0533/8426/2864b.png)
![\frac{[\text{Imidazole}]}{[\text{Imidazolium ion}]}=3.98](/tpl/images/0533/8426/0af59.png)
![[\text{Imidazole}]=3.98[\text{Imidazolium ion}]](/tpl/images/0533/8426/f647e.png)
...........(1)![\frac{[\text{Imidazole}]}{[\text{Imidazole}]+[\text{Imidazolium ion}]}](/tpl/images/0533/8426/affc2.png)
![\frac{3.98[\text{Imidazolium ion}]}{3.98[\text{Imidazolium ion}]+[\text{Imidazolium ion}]}](/tpl/images/0533/8426/250f9.png)
![\frac{3.98[\text{Imidazolium ion}]}{4.98[\text{Imidazolium ion}]}](/tpl/images/0533/8426/6749d.png)
Other questions on the subject: Chemistry
Chemistry, 22.06.2019 00:00, dustinquiz255
1) this is the structure in the cell nucleus that houses a cell's genetic information
Answers: 3
Chemistry, 22.06.2019 07:30, bbyniah123
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 20:30, sydneip6174
We are hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?
Answers: 2
You know the right answer?
A 0.10 M imidazole solution has a pH of 6.6. To the nearest hundredth of a unit, what fraction of th...
Questions in other subjects:
Mathematics, 12.02.2021 05:20
History, 12.02.2021 05:20
Biology, 12.02.2021 05:20
History, 12.02.2021 05:20
Mathematics, 12.02.2021 05:20
