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valentinak56 [21]
3 years ago
13

Threonine, an amino acid whose pI is 5.6, is shown below. What would be the overall charge for threonine at a pH of 5.6?

Chemistry
1 answer:
saveliy_v [14]3 years ago
4 0
PI is called isoelectric point at which the amino acid is present as as Zwitter ion which contain equal positive and negative charges so the net charge on this amino acid will be Zero (Neutral)
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Physical Meaning of pKa Which of the following aqueous solutions has the lowest pH: 0.1 M HCl; 0.1 M acetic acid (pKa = 4.86); 0
ser-zykov [4K]

Answer:

<em>The solution with the lowest pH is 0.1 M HCl.</em>

Explanation:

Since the three solutions have the same concentration (0,1M) it is only necessary to look at the pKa of each solution.

Also, knowing that a higher pKa means a lower Ka, because pKa = -Log (Ka). Thus, a lower Ka means a lower concentration of protons with a higher pH ( pH = -Log [H+].

The HCl doesn't have a pKa because is a strong acid that dissociates completely. Therefore, this solution produces a lower pH. Looking at the pKa of acetic acid and formic acid solutions, the second with the lowest pH is the formic acid solutions and the higher pH is for the acetic acid solution.

3 0
4 years ago
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Marysya12 [62]

Answer:  84.56 L is the answer.

Explanation:

4 0
3 years ago
A glass cylinder contains 2 gases at a pressure of 106 kPa. If one gas is at 7 kPa, what is the pressure of attributed to the ot
Ivan

Answer:

b) 99 kPa

Explanation:

According to Daltons law of partial pressure, the total pressure of a mixture of two or more non reactive gases is the sum of their individual pressures. Let the total pressure of a mixture of n number of gases be P_{total} and their individual pressure be P_1,P_2,P_3,\ .\ .\ .\ ,\ P_n, According to Daltons partial pressure law:

P_{total}=P_1+P_2+P_3+.\ .\ .+P_n

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P_{total}=P_1+P_2+P_3+.\ .\ .+P_n\\P_{total}=P_1+P_2\\106\ kPa=7\ kPa+P_2\\P_2=106\ kPa-7\ kPa\\P_2=99\ kPa

7 0
4 years ago
Which compounds give a 1h nmr spectrum with two signals in a ratio of 2:3?
spayn [35]

Four option are provided as,

CH3CH2OCH2CH3

CH3CH2Cl

CH3CH2CH3

CH3OCH2CH2OCH3


CH3CH2Cl having 2 peaks of H NMR as 1st peak for quartet of 2 H and 2nd peak of triplet of 3 H and thus the ratio of both the peak is 2 :3 as the ratio indicates the number of hydrogen corresponds to each peak.


8 0
4 years ago
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