How to tell?

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Daniel Kim 1D
Posts: 38
Joined: Wed Oct 03, 2018 12:17 am

How to tell?

Postby Daniel Kim 1D » Sun Jul 28, 2019 9:06 pm

I was wondering if there was a list of acids or like a way to tell if one is an acid.

Jennifer Zhou 1A
Posts: 31
Joined: Mon Jun 17, 2019 7:23 am

Re: How to tell?

Postby Jennifer Zhou 1A » Sun Jul 28, 2019 9:11 pm

bronsted acid usually has an H in it, like HCl, H2SO4, since it can donate H+
bronsted base usually has an OH in it, like NaOH and KOH, so it can accept the H+ from acid to form H2O.

Radha Patel 4I
Posts: 71
Joined: Tue Feb 12, 2019 12:15 am

Re: How to tell?

Postby Radha Patel 4I » Sun Jul 28, 2019 11:01 pm

Typically acids have a hydrogen atom. For instance HCl and HPO+
Also acids can typically gain a hydrogen atom for solutions involving water for instance NH3 + H2O (double arrows in both directions) NH4^+ OH^-
H2O is the acid and NH4^+ is the conjugate acid

bloodorangefield
Posts: 24
Joined: Wed Sep 18, 2019 12:19 am

Re: How to tell?

Postby bloodorangefield » Sun Nov 17, 2019 9:53 pm

Often acids will contain either H or OH

chrischyu4a
Posts: 52
Joined: Thu Jul 25, 2019 12:16 am

Re: How to tell?

Postby chrischyu4a » Fri Nov 22, 2019 6:49 pm

Acids usually contain hydrogen since acids are defined as substances that donate hydrogen ions.

Joowon Seo 3A
Posts: 75
Joined: Sat Aug 24, 2019 12:17 am

Re: How to tell?

Postby Joowon Seo 3A » Sat Nov 23, 2019 6:01 pm

Acids typically donate a proton. For example, with HCl aqueous it beomes H+ and Cl-.

Kaitlyn Jang 1F
Posts: 45
Joined: Sat Aug 17, 2019 12:16 am

Re: How to tell?

Postby Kaitlyn Jang 1F » Sun Nov 24, 2019 2:29 pm

Acids typically have a hydrogen since it donates protons (ex: HCl). Bases will have hydroxide (OH) in their formula for you to identify (ex: sodium hydroxide: NaOH).

Sadhana_Dicussion_4A
Posts: 51
Joined: Sat Sep 07, 2019 12:19 am

Re: How to tell?

Postby Sadhana_Dicussion_4A » Sun Nov 24, 2019 2:33 pm

Given a chemical equation, you can determine which substance is the acid by counting the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased, that substance is an acid since acids are hydrogen ion donors.

Cavalli_1H
Posts: 68
Joined: Thu Sep 19, 2019 12:15 am

Re: How to tell?

Postby Cavalli_1H » Sun Nov 24, 2019 6:47 pm

bloodorangefield wrote:Often acids will contain either H or OH
acids have OH? I thought it was bases?

Ian Morris 3C
Posts: 68
Joined: Wed Sep 18, 2019 12:18 am

Re: How to tell?

Postby Ian Morris 3C » Sun Nov 24, 2019 8:31 pm

Sadhana_Dicussion_4A wrote:Given a chemical equation, you can determine which substance is the acid by counting the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased, that substance is an acid since acids are hydrogen ion donors.


Is there any way to confirm if it is an acid or base without a chemical equation?

Abraham De Luna
Posts: 31
Joined: Sat Sep 14, 2019 12:16 am

Re: How to tell?

Postby Abraham De Luna » Sun Nov 24, 2019 11:22 pm

Acids will usually have h atoms.

Sean Cheah 1E
Posts: 82
Joined: Wed Sep 18, 2019 12:20 am

Re: How to tell?

Postby Sean Cheah 1E » Mon Nov 25, 2019 12:22 pm

Sometimes it can be difficult to tell whether a given molecule is an acid or a base from its molecular formula alone. For example, NH3 (ammonia) is a weak base despite having several H atoms.


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