Ernest Ong

3 Questions 19 Answers 0 Followers

Questions related from Ernest Ong

Why the pH of xanthan gum in aqueous solution is 7 (neutral) when it has glucuronic and pyruvic acids in its chemical structure?

I find it pretty confusing since xanthan gum has both glucuronic and pyruvic acids in its chemical structure, it should release H+ ions upon solvation in an aqueous solution and make it acidic.

01 January 2018 7,769 3 View

How to determine the value of charge and multiplicity in Gaussian09?

My molecule of interest is a single negatively charged glucose-based molecule that consists of 30 atoms (9 carbon atoms, 8 oxygen atoms and 13 hydrogen atoms). The total valence electrons are 131...

01 January 2018 5,580 11 View

Is there anyone can share to me the differences between Opt=Z-matrix and Opt=ModRed in Gaussian 09?

I am quite new in using Gaussian 09. Is there anyone can share to me the differences between Opt=Z-matrix and Opt=ModRed? Which one should be used under what circumstances? Thank you.

01 January 2017 8,510 0 View