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Topic: Increasing H30+  (Read 5554 times)

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Offline student8607

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Increasing H30+
« on: March 10, 2009, 05:52:14 PM »
Arrange the following substances in order of increasing H3O+ for a 0.1M solution of each
a. Zn(NO3)2
b. Na2O
c. NaOCl
d. NaClO4
e. HClO4

I'll be fine once I get my ICE chart setup, but for A-E: how do I write out the reactions?
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Offline Astrokel

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Re: Increasing H30+
« Reply #1 on: March 10, 2009, 08:22:16 PM »
Some of it are salt while others are base or acids. Can you differtiate them? Not necessary to write out reactions but you can if you want.
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Offline Loyal

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Re: Increasing H30+
« Reply #2 on: March 10, 2009, 10:04:23 PM »
Quote from: student8607 on March 10, 2009, 05:52:14 PM
Arrange the following substances in order of increasing H3O+ for a 0.1M solution of each
a. Zn(NO3)2
b. Na2O
c. NaOCl
d. NaClO4
e. HClO4

I'll be fine once I get my ICE chart setup, but for A-E: how do I write out the reactions?

You can guess several by relative acid strength.  Just start by naming which ones are acids or bases and then how strong they are.
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Offline student8607

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Re: Increasing H30+
« Reply #3 on: March 12, 2009, 11:09:17 AM »
Quote from: Astrokel on March 10, 2009, 08:22:16 PM
Some of it are salt while others are base or acids. Can you differtiate them?
No, and that is a problem I keep running into.
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Offline student8607

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Re: Increasing H30+
« Reply #4 on: March 12, 2009, 11:13:54 AM »
Well I know HClO4 is a very strong acid, so it is going to be on the top.

How are the others acids or bases if they don't have H or OH attached?

They all look like salts to me.
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Offline Astrokel

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Re: Increasing H30+
« Reply #5 on: March 12, 2009, 11:21:20 AM »
Right. Are you able to identify a neutral salt and a base? While others contain conjugate base of a strong and weak acid.
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Offline student8607

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Re: Increasing H30+
« Reply #6 on: March 12, 2009, 11:27:44 AM »
a. Zn(NO3)2 --> NO3 is a CB of a strong acid.
b. Na2O --> Na is a spectator. Do both count as spectators? Not sure about O.
c. NaOCl --> Na & Cl are both spectators. Not sure what O is?
d. NaClO4 --> Na is a spectator. ClO4 is a conjugate base of a strong acid
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Offline Astrokel

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Re: Increasing H30+
« Reply #7 on: March 12, 2009, 11:34:39 AM »
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Offline student8607

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Re: Increasing H30+
« Reply #8 on: March 12, 2009, 11:52:43 AM »
a. well Zn is an anion?
b. conjugate base of a strong acid
c. still not sure
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Offline Astrokel

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Re: Increasing H30+
« Reply #9 on: March 12, 2009, 12:27:35 PM »
Well if you check out the first link you would realize nitrate is a neutral anion. While the second link tells you OCl- is a conjugate base of a weak acid. The relative basicity depends on the stability of conjugate base. Also if you would have learn group I and II metal oxide are basic in nature.
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