Question

Sc : Molecular Modeling (3Dand additional questions. Molecule Structure Glycine :0 W c-NH gic H-O: ek SCI Glutamic Acid OHH HO (nonbonded electrons not shown) H-0- 0- ċ- nd oni ċ- ċ--0-H H HN HH el cul pomi 1. How many of the atoms in glycine and glutamic acid could be considered to be central atoms? TOL Glycine: Glutamic acid: 8 2. What are the molecular geometries of the C and N atoms that have arrows pointing to them in glycine? Carbon at arrow #1: _Bent Carbon at arrow #2: Tetrahedral Nitrogen at arrow #3: _pyramidal 3. How many polar bonds are in each compound above? Glycine: 5 polar bonds Glutamic Acid: polar bonds struk 3b. Using this information, would you expect glycine or glutamic acid to be more soluble in water?

Answer 1

Answer Hint atom which attached with at least 2 surrounding atoms known as central atom. (NTH glycine has 14 control atoms - H HHH glutamic acid has a central atong h HN Ans wer (2) ( C - 7 ; spi L- P H :22 N-H sp3 H Carbon at #1 = trigonal planar Carbon at #2 = tetrahedral Nitrogen at #3=(trigonal Pyramidal H O Answer 7 Note : c-c and c-H bonds are not polar bond because these has electronegativity difference less than 0.4 U - 2.0 polar bond Polar bonds so glycine 6 glutamic acid 9 polar bonds Answer (4) glutamic acid has more solubility in water than glycine, because more no. of hydrogen bonding in glutamic acid with water due to two acidic group.