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Topic: reaction with hydroxide?  (Read 1820 times)

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Offline taroicecream

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reaction with hydroxide?
« on: October 11, 2010, 01:21:26 PM »
i've been stumped on this question, so i was hoping i could receive some guidance?

which of the following does not react with 1M NaOH?
MnO(OH)2
Cr(OH)3
MnO2
Al(OH)3
Cr(OH)2

i'm not completely sure how to approach this
for example i know that Al(OH)3 can act as an acid and make [Al(OH)4]-
but i'm not sure how you can tell

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