Acid vs Base

Moderators: Chem_Mod, Chem_Admin

QUEP 2F
Posts: 101
Joined: Fri Sep 24, 2021 7:11 am

Acid vs Base

Postby QUEP 2F » Wed Dec 01, 2021 11:53 pm

How do you determine whether an acid or base is weak or strong w/o having to calculate pH? Or are we expected to memorize the list of strong/weak acids and bases that's referred to in the Achieve HW Week 10?

Joseph Liao 3C
Posts: 55
Joined: Tue Sep 28, 2021 5:04 am

Re: Acid vs Base

Postby Joseph Liao 3C » Wed Dec 01, 2021 11:56 pm

I think the easiest way is definitely just to memorize the list given to us on the achieve. However, there are a few things that can help you remember. For example, for the strong bases, usually a group 1 or group 2 metal with a hydroxide group will be a strong base.

I hope that helps!

Nathan Tran 1B
Posts: 104
Joined: Fri Sep 24, 2021 6:21 am
Been upvoted: 1 time

Re: Acid vs Base

Postby Nathan Tran 1B » Wed Dec 01, 2021 11:58 pm

Yea I agree, memorize the strong acid list for sure. Anything that is not a strong acid or base is automatically a weak acid/base

Uma Patil 2A
Posts: 99
Joined: Fri Sep 24, 2021 5:16 am

Re: Acid vs Base

Postby Uma Patil 2A » Thu Dec 02, 2021 12:23 am

The easiest way is to memorize the list of strong acids and bases, and know that any other acids and bases you see will be weak. As a general rule of thumb, weak acids will have strong HA bonds.

Jessica Sun 2I
Posts: 102
Joined: Fri Sep 24, 2021 7:18 am

Re: Acid vs Base

Postby Jessica Sun 2I » Thu Dec 02, 2021 11:06 am

Memorizing the list of strong acids and bases will be helpful as we know that any other acid or base will be a weak base or acid.

KatieWu 1E
Posts: 102
Joined: Fri Sep 24, 2021 5:23 am

Re: Acid vs Base

Postby KatieWu 1E » Thu Dec 02, 2021 11:20 am

I believe we are expected to memorize the list of strong acids and bases. For strong acids the acronym one of the UAs told me is "SO I BRought NO CLean CLOthes" so that can hopefully help you memorize

Ruben Adamov 1E
Posts: 105
Joined: Fri Sep 24, 2021 5:56 am

Re: Acid vs Base

Postby Ruben Adamov 1E » Thu Dec 02, 2021 11:30 am

There is a list that includes all the known strong acids and bases. For acids its mostly memorization, for bases, if I remember correctly its the group 1 and 2 elements combined with OH (I may be wrong on that one). Anything else is either a weak acid or a weak base.
Hope this helps!!!

Claire Kim 1F
Posts: 102
Joined: Fri Sep 24, 2021 6:27 am

Re: Acid vs Base

Postby Claire Kim 1F » Thu Dec 02, 2021 4:14 pm

QUEP 1D wrote:How do you determine whether an acid or base is weak or strong w/o having to calculate pH? Or are we expected to memorize the list of strong/weak acids and bases that's referred to in the Achieve HW Week 10?


I say it's easier to memorize. However, I would know why it's a stronger/weaker acid/base.

Isabella Yee 1F
Posts: 110
Joined: Fri Sep 24, 2021 6:35 am
Been upvoted: 1 time

Re: Acid vs Base

Postby Isabella Yee 1F » Thu Dec 02, 2021 4:19 pm

As people have mentioned, it is best to memorize the list of strong acids and bases. The acids and bases not found on that list are (typically) considered weak.

Erin Chin 1L
Posts: 100
Joined: Fri Sep 24, 2021 7:31 am

Re: Acid vs Base

Postby Erin Chin 1L » Thu Dec 02, 2021 4:20 pm

I think that we're expected to memorize the list of strong/weak acids. One way to memorize strong acids is through the acronym, "SO I BRought NO Clean CLOthes" and for bases, it's Group I and II metal hydroxides and oxides. Hope this helps!

Matthew Nguyen 3G
Posts: 50
Joined: Fri Sep 24, 2021 7:18 am

Re: Acid vs Base

Postby Matthew Nguyen 3G » Thu Dec 02, 2021 4:54 pm

A list of strong/weak acids and bases was provided to us on achieve! Unfortunately, the only way to distinguish between each is to memorize the list.

Nayeli Valtierra 2F
Posts: 106
Joined: Fri Sep 24, 2021 6:47 am

Re: Acid vs Base

Postby Nayeli Valtierra 2F » Thu Dec 02, 2021 5:15 pm

Personally, I think it would be most helpful to memorize the list given on strong and weak acids.

joshua_quinn_1C
Posts: 112
Joined: Fri Sep 24, 2021 5:25 am

Re: Acid vs Base

Postby joshua_quinn_1C » Thu Dec 02, 2021 11:47 pm

I reccomend memorizing the list of strong acids which are: HCl, HBr, HI, HClO3, HClO4, H2SO4, HNO3. For bases its generally any oxide and hydroxide with group 1 and 2 ions.

Sidharth Paparaju 3B
Posts: 167
Joined: Fri Sep 24, 2021 5:14 am

Re: Acid vs Base

Postby Sidharth Paparaju 3B » Fri Dec 03, 2021 10:46 am

I believe that memorizing them is the easiest way; we can use structures to recognize weak acids and weak bases. Weak acids often contain the carboxyl group -COOH wherease weak bases often contain the ammine group (or basically a N with a lone pair).


Return to “Bronsted Acids & Bases”

Who is online

Users browsing this forum: No registered users and 3 guests