Question

which chemical test should performed to differentiate between glycine and arginine ​

Answer 1

Answer:The Van Slyke determination tests for specific amino acids

Explanation:The Van Slyke determination is a chemical test for the determination of amino acids containing a primary amine group. It is named after the biochemist Donald Dexter Van Slyke (1883-1971).[1]

One of Van Slyke's first professional achievements was the quantification of amino acids by the Van Slyke determination reaction.[2] To quantify aliphatic amino acids, the sample is diluted in glycerol and then treated with a solution of sodium nitrite, water and acetic acid. The resulting diazotisation reaction produces nitrogen gas which can be observed qualitatively or measured quantitatively.[3]

Van Slyke Reaction: R-NH2 + HONO → ROH + N2 + H2O [4]

Answer 2

Glycine and Arginine Group​

Explanation:

• The primary concern that makes amino acids not the same as each other is the R-group of every individual amino acid
• Glycine is a non-polar amino acid and arginine is a polar amino acid (The arginine containing the electronegative component of nitrogen)  
• The main difference between these two amino acids is that glycine will have a R-group of a single hydrogen atom, where arginine's R-group will comprise of three CH2 units bound to one guanidino group