Consider acetic acid. What is the net charge on the molecule in a solution of acetic acid at pH of 5.8, 4.8, 8.4 and 1.5. The pKa of acetic acid is 4.8.
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Consider acetic acid. What is the net charge on the molecule in a solution of acetic acid at pH of 5.8, 4.8, 8.4 and 1.5. The pKa of acetic acid is 4.8.
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- For an acid HA with a pKa of 5.2, what is the ratio of the concentration of the conjugate base to that of the acid at pH 7.2.Why do HCl, HNO3, etc. show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character?Lactic acid (HC3H5O3) has one acidic hydrogen. A 0.10 M solution of lactic acid has a pH of 2.44 Calculate the pKa at 25°C. Report your answer to the hundredths place
- What is the net charge on the protein shown below (without pH considerations) at pH 12? a. -2 b. -1 c. +1 d. 0 e. +3 f. +2Provide an explanation without using the pka values : Why is phenol stronger acid than butanoic acid?The pKaa of the conjugate acid of guanidine is 13.6, making it one of the strongest neutral organic bases. Offer an explanation.
- Consider the amino acid and its pKa values:Lysine: pKa1= 2.18 pKa2= 8.95, pKaR=10.79 a. Calculate the isoelectric point.b. What will be the net charge on lysine at the isoelectric point?c. In what direction will the lysine move when placed in an electric field at a pH value of 6.68d. Which form of the lysine is the least soluble in water?e. Draw the structure of the lysine which is the least soluble in water?What fraction of ethane -1,2-dithiol is in the form (A2-) at pH 8.00? Ka1 = 1.41 × 10-9 and Ka2 = 3.72 x 10-11 A) 0.124 B) 0.876 C) 4.6 × 10-4 D) 0.690Consider the structure of the amino acid I-alanine. Draw the structure of L-alanine at pH=6 L-alanine at pH=2 L-alanine at pH=10
- Can any functional groups on Risperidone ionize? If so, which ones? Under what conditions? What are the pKa values of these functional groups? Write the structures in their correct ionization state at physiological pH.Given that C6H11COOH has a pKa = 4.8 and C6H11N + H3 has a pKa = 10.7, what pH would you make the water layer to cause both compounds to dissolve in it?Given a 0.100 M solution of anserine at its isoelectric point and ready access to 0.200 M HCl, 0.200 M NaOH and distilled water, describe the preparation of 1 L of 0.0300 M anserine buffered solution, pH 7.20. Volume of stock solution needed = ? mL Volume of HCl needed to adjust the imidazole group = ? mL Volume of HCl needed to titrate the amino group = ? mL Total HCl needed = ? mL