Concept explainers
(a)
Interpretation:
The pH at which glycine exists at the given form has to be calculated.
Concept introduction:
The isoelectric point
The value of
Protons are released when the
(b)
Interpretation:
The pH at which glycine exists at the given form has to be calculated.
Concept introduction:
The isoelectric point
The value of
Protons are released when the
(c)
Interpretation:
The
Concept introduction:
The isoelectric point
The value of
Protons are released when the
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Essential Organic Chemistry, Global Edition
- 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?arrow_forwardidentify which has the lowest pka value. use aromatcity concepts to explain why.arrow_forwardCarbonic acid has a pKa of 6.1 at physiological temperature. Is the carbonic acid/bicarbonate buffer system that maintains the pH of the blood at 7.4 better at neutralizing excess acid or excess base?arrow_forward
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- C6H5COOH(aq)+NaHCO3(aq) --> C6H5COONa(aq) +H2CO3 predict the equilibrium constant Kc when the pKa of C6H5COOH is 4.21 and the pKA of H2CO3 is 6.35arrow_forwardDraw the structure of CH3COOH (pKa = 4.7) at pH = 2, pH = 7, and pH = 10.arrow_forwardGive the polarity, melting point, boiling point, solubility, and state at room temperature of the following: Linoleic acid Tripalmitin Triolein Phosphatidylcholine(28:0) Phosphatidylinositol(34:1) Phosphatidylserine(36:2) Phosphatidylethanolamine(38:6) Cholesterolarrow_forward
- Explain the difference in Pka of the following acids, CH3CH2OH and FCH2CH2OH?arrow_forwardA glycylglycine buffer is made to a pH of 8.45 at 25 ∘C then warmed to 37 ∘C. The pH of the solution changes because of the pKa changes. Glycylglycine has a p?a=8.26 and a Δp?a/Δ?=−0.026 °C−1. Calculate the pH of the buffer at 37 ∘C.arrow_forwardCarnosine, found in muscle and brain tissue, acts as a buffer to neutralize small amounts of acid. The pKa of the conjugate acid of carnosine is close to 7.0. What is its structure?arrow_forward
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