Naming H2O

Moderators: Chem_Mod, Chem_Admin

Chloe Shamtob 2H
Posts: 108
Joined: Wed Sep 30, 2020 9:55 pm

Naming H2O

Postby Chloe Shamtob 2H » Sat Dec 05, 2020 2:13 pm

When writing the formula for a coordination compound, how do you know whether tow rite water as H2O or OH2. Does it matter?

Olivia Smith 2E
Posts: 100
Joined: Wed Sep 30, 2020 9:43 pm

Re: Naming H2O

Postby Olivia Smith 2E » Sat Dec 05, 2020 2:16 pm

It does not matter that much. Most of the things are by choice, with people choosing to but the most electronegative atom first. Ideally if following the pattern of the rest of the molecular formula you would put O (the most electron negative) first

Eric Cruz 2G
Posts: 92
Joined: Wed Sep 30, 2020 9:45 pm
Been upvoted: 1 time

Re: Naming H2O

Postby Eric Cruz 2G » Sat Dec 05, 2020 2:28 pm

It doesn't make a significant difference. H2O and OH2 signal that they are both neutral water molecules. However, the OH2 from what I have noticed gives specificity of whether it will bond to the Hydrogen atom or the oxygen atom of the water molecule

Hailey Qasawadish 2J
Posts: 71
Joined: Wed Sep 30, 2020 9:36 pm
Been upvoted: 1 time

Re: Naming H2O

Postby Hailey Qasawadish 2J » Sat Dec 05, 2020 4:34 pm

I have seen it be done both ways in the book, but I don't think it matters too much. I think writing it as OH2 is just a little bit more specific in terms of bonding.

Adam Bustamante 1I
Posts: 103
Joined: Wed Sep 30, 2020 9:51 pm

Re: Naming H2O

Postby Adam Bustamante 1I » Sun Dec 06, 2020 10:33 am

I don't think it matters which way you write it (H2O or OH2) but I think you would use one over the other depending on where the molecule is bonding.

Bella Bursulaya 3G
Posts: 144
Joined: Wed Sep 30, 2020 9:54 pm

Re: Naming H2O

Postby Bella Bursulaya 3G » Sun Dec 06, 2020 10:35 am

I think (OH2) is more common, but since the final is multiple choice, you don't have to worry about it because you'll see how it'll be written.

abby hyman
Posts: 93
Joined: Thu Jul 25, 2019 12:16 am

Re: Naming H2O

Postby abby hyman » Sun Dec 06, 2020 11:47 am

It does not matter really how you write it. I remember in lecture that Lavelle wrote it as OH2 to show that the oxygen was what was donating the electrons rather than the Hydrogen

Emma Chang 1G
Posts: 52
Joined: Wed Sep 30, 2020 10:02 pm

Re: Naming H2O

Postby Emma Chang 1G » Sun Dec 06, 2020 12:06 pm

I think we use OH2 since O is the one binding to the central atom, but I think either is fine since the final is multiple choice.

Malakai Espinosa 3E
Posts: 96
Joined: Wed Sep 30, 2020 9:50 pm
Been upvoted: 1 time

Re: Naming H2O

Postby Malakai Espinosa 3E » Sun Dec 06, 2020 12:09 pm

OH2 I think is just helpful to write sometimes that way we know the molecule is binding to the Oxygen atom in water, and not one of the hydrogen atoms.

Sandy Lin 1L
Posts: 97
Joined: Wed Sep 30, 2020 9:48 pm

Re: Naming H2O

Postby Sandy Lin 1L » Sun Dec 06, 2020 12:11 pm

I do not think it matters since both still represent a water molecule. The reason why they are written in different orders is that it represents which atom is bonded to the central atom. In the case of H20, since hydrogen can only form one bond, and it is already bonded to Oxygen, only the oxygen can bond to something else. That is why it is written in the order of OH2.

Kendall_Dewey_2D
Posts: 57
Joined: Wed Sep 30, 2020 10:04 pm

Re: Naming H2O

Postby Kendall_Dewey_2D » Sun Dec 06, 2020 12:29 pm

I don't think how you write it matters too much, especially since the final is multiple choice. I just recall that Professor Lavelle wrote OH2 in lecture to show that oxygen was what was donating electrons, not Hydrogen.

Sreeram Kurada 3H
Posts: 98
Joined: Wed Sep 30, 2020 10:00 pm

Re: Naming H2O

Postby Sreeram Kurada 3H » Sun Dec 06, 2020 12:50 pm

It's more of a preference than anything. Since O is the electronegative atom, people might write water that way to illustrate that the bonds are occurring from the oxygen rather than the hydrogens.


Return to “Naming”

Who is online

Users browsing this forum: No registered users and 2 guests