Question

Below are the observed rate constants for this reaction at varying pH values Table 1. Observed rate constants (x 10P) for alanine reaction of 0.5 m alanine solutions at different pH values Temp Initia pH Temp OC)2.3 280 290 300 310 320 9.92 330 6 9.5 2.24 4.72 9.09 18.03 37.0 2.04 5.2 2.87 6.02 9.92 20.3 21.07 QUESTION 2: What conclusions can you draw from this table? Explain how the data supports your conclusion (hint:remember that alanine occurs in different forms depending on pH*)

Answer 1

The above table shows that at different temperature conditions,the value of rate constant is always higher at ph value=6.

This means that the alanine is most reactive at ph value 6,at different value of temperature.It concludes that the alanine has its isoelectric point at that ph value .

Isoelectric point is that value of ph where the amino acids shows no net electric charge .