ATP example

Moderators: Chem_Mod, Chem_Admin

Clarissa Nava 3H
Posts: 60
Joined: Fri Sep 29, 2017 7:05 am

ATP example

Postby Clarissa Nava 3H » Sun Mar 17, 2019 12:04 am

why is the hydrolysis of a chemical negative ?

Posts: 18918
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 745 times

Re: ATP example

Postby Chem_Mod » Sun Mar 17, 2019 9:36 am

The hydrolysis of every chemical is not necessarily negative but for ATP in particular when you’re breaking a bond a lot of energy is released because that bond was very unstable.

Cade Okohira 4K
Posts: 47
Joined: Fri Sep 28, 2018 12:15 am

Re: ATP example

Postby Cade Okohira 4K » Sun Mar 17, 2019 6:43 pm

Hydrolysis is a catabolic reaction, in which large molecules are broken down into smaller ones. Thus, a fair amount of energy is released and the reaction is endergonic.

MariahClark 2F
Posts: 60
Joined: Wed Nov 15, 2017 3:04 am

Re: ATP example

Postby MariahClark 2F » Sun Mar 17, 2019 7:28 pm

Wouldn’t the reaction be exergonic since it’s giving off energy and not requiring it?

Posts: 51
Joined: Wed Feb 20, 2019 12:18 am

Re: ATP example

Postby CameronDis2K » Fri Feb 28, 2020 11:28 am

Since hydrolysis represents the breaking of bonds in a reaction, energy and heat will for sure be released (as products are favored) leading to an exothermic reaction where the deltaH is negative.

Posts: 62
Joined: Thu Aug 01, 2019 12:15 am

Re: ATP example

Postby 905373636 » Fri Feb 28, 2020 12:19 pm

MariahClark 2F wrote:Wouldn’t the reaction be exergonic since it’s giving off energy and not requiring it?

In ATP's case, yes, but not all hydrolytic reactions are exergonic -- when it requires more energy than it gives off.

Posts: 103
Joined: Fri Aug 02, 2019 12:15 am

Re: ATP example

Postby kevinolvera1j » Fri Mar 13, 2020 3:35 pm

ATP happens to be a very unstable molecule due to its phosphate groups being next to each other (these phosphates all have negative charges) Thus when hydrolysis occurs, the products are at a lower energy state because they are more stable apart than together.

Return to “Biological Examples”

Who is online

Users browsing this forum: No registered users and 1 guest