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Topic: Ca(OH)2 and CaH2O2  (Read 1310 times)

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Offline Fish200398

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Ca(OH)2 and CaH2O2
« on: March 27, 2020, 03:07:16 AM »
I was thinking why Ca(OH)2 name is not calcium dihydroxide, instead i found CaH2O2 is named so.
I checked their lewis structure. Both have the same.
What's going on? Different name, and formula, the same structure?
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Offline AWK

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Re: Ca(OH)2 and CaH2O2
« Reply #1 on: March 27, 2020, 04:12:57 AM »
In catalogs, alphabetical order is most often used. But in the case of organic compounds, the order is; C, H, and other elements in alphabetical order.
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Offline chenbeier

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Re: Ca(OH)2 and CaH2O2
« Reply #2 on: March 27, 2020, 04:32:10 AM »
Additionally there is only one Calciumhydroxide, so no need to declare Calciumdihydroxide.
But iron can be Fe(OH)2 iron-II-hydroxide and Fe(OH)3 irom-III- hydroxide.
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