Question

1)Which of the molecules as shown above could form an ionic bond with a suitable partner? Check all that apply. a)tyrosine b)4-hydroxy phenylpyruvate c)homogentisate d)4-maleyl-acetoacetate e)none of the above

2) Which of the molecules as shown above could form a hydrogen bond with a suitable partner? Check all that apply. a)tyrosine b)4-hydroxy phenylpyruvate c)homogentisate d)4-maleyl-acetoacetate e)none of the above

PLEASE HELP!!!

Answer 1

Any molecule with a charge can form an ionic bond.

Molecules with -OH, -NHR can be H-bond donors and molecules with carbonyls, carboxylic acids, or amino groups can be acceptors.

Answer 2

i dont understand aaronq

Answer 3

do you know what an ionic bond is?

Answer 4

yes

Answer 5

so, which of the molecules in the picture are able to form one with a suitable cation or anion?

Answer 6

tryosine?

Answer 7

yes, any others?

Answer 8

4-hydroxy phenylpyruvate
4-maleyl-acetoacetate

Answer 9

yep! homogentisate can too, notice the carboxylate group

Answer 10

Now, for the second part. Which can form hydrogen bonds either as acceptors or donors.

Answer 11

i do not understand

Answer 12

do you know what a hydrogen bond is? do you know what atoms can form them?

Answer 13

i know what a hydrogen bond is

Answer 14

oxygen, fluorine and nitrogen?

Answer 15

right, so which of these is capable of being an H donor (like -OH) or an acceptor?

Answer 16

oxygen and nitrogen?

Answer 17

yeah, but i mean which of the molecules in the picture?

Answer 18

uhmm......hydroxy-phenylpyruvate?

Answer 19

am i right? aaronq

Answer 20

all of them can be H-bond donors (all of them have an alcohol group, -OH)

except 4-maleyl.. but 4-maleyl can act as an acceptor through the carbonyls, SO all of them can.

Answer 21

so all of the molecules can form hydrogen bonds with suitable partners?

Answer 22

yes

Answer 23

ok. thankyou so much

Answer 24

no problem !