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Topic: REACTION BETWEEN RHODIUM AND AMMONIUM HYDROXIDE  (Read 4909 times)

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Offline tinapratiwi

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REACTION BETWEEN RHODIUM AND AMMONIUM HYDROXIDE
« on: February 17, 2010, 03:28:49 AM »
Lately, I react between solution of Rhodium (acid) with Ammonium hydroxide p.a (base), and I find Rhodium salt... The Colour's of salt is orange..

Is it true, that the reaction will result The Rhodium salt? If it's not true, what will happen if I react Solution Rhodium with Ammonium hydroxide?

please help me... thank you. ;)

Offline AWK

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Re: REACTION BETWEEN RHODIUM AND AMMONIUM HYDROXIDE
« Reply #1 on: February 17, 2010, 05:55:53 AM »
Rh2O3.5H2O
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Offline tinapratiwi

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Re: REACTION BETWEEN RHODIUM AND AMMONIUM HYDROXIDE
« Reply #2 on: February 18, 2010, 02:42:24 AM »
Thank you AWK.. :D

And what is the name of that crystal (IUPAC NAME)? It's Rhodium salt ?

Offline AWK

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Re: REACTION BETWEEN RHODIUM AND AMMONIUM HYDROXIDE
« Reply #3 on: February 18, 2010, 04:45:37 AM »
Rhodium(III) oxide pentahydrate
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Offline tinapratiwi

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Re: REACTION BETWEEN RHODIUM AND AMMONIUM HYDROXIDE
« Reply #4 on: February 24, 2010, 04:34:57 AM »
if  I react Rhodium Solution with Ammonium Solution, acidity conditions began to change into a base, and there is deposition? it's true rhodium deposition (yellow powder)?

and at pH can settle how much rhodium with the addition of ammonia ?

Offline tinapratiwi

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Re: REACTION BETWEEN RHODIUM AND AMMONIUM HYDROXIDE
« Reply #5 on: February 24, 2010, 11:25:36 PM »
if I add Ammonia solution into Rhodium solution, then things will change the pH from acidic to alkaline. Then there is a yellow precipitate. Does the salt deposits Rhodium? And the pH began to settle how Rhodium?

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