Chemguide: Support for CIE A level Chemistry

This statement is about the hydrolysis of proteins using semi-concentrated hydrochloric acid.

Before you go on, you should find and read the statement in your copy of the syllabus.

This statement will only be examined in the final exam of a two year course.

You will find what you need on the page about protein hydrolysis.

You will find that I give a time of 24 hours for the hydrolysis; CIE's teacher support material gives 8 hours. I suggest you learn their value.

Take your time to be sure that you understand exactly what happens when the peptide bond is broken. Compare the original dipeptide with the hydrolysis products, and work out exactly what gets broken, and what gets added to each side of the broken bond.

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