001 Study Guide - Quiz Guide: Gastric Acid, Amine, Free Base

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25 Apr 2023
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Biochemistry practice exam questions and answers: in a hospital laboratory, a 10. 0ml sample of gastric juice, obtained several hours after a meal, was titrated with 0. 1m naoh to neutrality; 7. 2ml of naoh was required. The patient"s stomach contained no ingested food or drink, thus assume that no buffers were present. What was the ph of the gastric juice? ph 1. 1: the amino acid glycine is often used as the main ingredient of a buffer in biochemical experiments. The amino group of glycine, which has a pka of 9. 6, can exist either in the. In a zone centered about ph 9. 6: in a 0. 1 m solution of glycine at ph 9. 0. what fraction of glycine has its amino group in the . 10-2 l: how much 5 m koh must be added to 1. 0 l of 0. 1 m glycine at ph 9. 0 to bring its ph to, in order to have 99% of the glycine in its nh3.

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