Valine ( HV ) is a diprotic amino acid with ?a1=5.18×10−3 and ?a2=1.91×10−10 . Determine the...

Question

Question

Valine ( HV ) is a diprotic amino acid with ?a1=5.18×10−3 and ?a2=1.91×10−10 . Determine the pH of each of the solutions.

A 0.182 M valine hydrochloride ( H2V+ Cl− ) solution.

pH=

A 0.182 M valine ( HV ) solution.

pH=

A 0.182 M sodium valinate ( Na+ V− ) solution.

pH=

Answer 1

Answer #1

A 0.182 M valine hydrochloride ( H₂V⁺Cl^- ) solution. pH = 1.55

A 0.182 M valine ( HV ) solution. pH = 5.23

A 0.182 M sodium valinate ( Na⁺V^- ) solution. pH = 11.5 (exact pH = 11.486)

Answer 2

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