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OpenStudy (anonymous):
are all metal oxides acidic..?
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OpenStudy (anonymous):
Well, what makes an acid? In order for a metallic oxide to be acidic, it would have to decrease the pH of neutral water to anything below a pH of 7. Take for example sodium oxide Na2O, it does not carry any hydrogen to the solution. When added to water, the total ionic equation is: \[Na(_2)O + H(_2)O --> 2Na(^+) + O(^_2) + H(^+) + OH(^-) \] If anything the solution might become more basic as the now free oxide ion connects with any loose hydride ions.
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Use Hvap of water = 40.7 kJ/mol, c of water = 4.184 J/g.u00b0C, and molar mass of HO = 18.
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