Chenny1010
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#1
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#1
Alkalis release OH- ions when dissolved in water, so when they react with an acid, the H+ ions from the acid bond with the OH- to give water.
Do insoluble bases also release hydroxide ions? If not, what happens when they react with acids to give water?
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scimus63
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Many bases which are described as being insoluble, it often means they are insoluble in water but they will dissolve in acids. If they will not dissolve in acid then I think it is highly unlikely that any reaction will take place.

This may help

https://www.science-revision.co.uk/neutralisation.html
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Chenny1010
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#3
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(Original post by scimus63)
Many bases which are described as being insoluble, it often means they are insoluble in water but they will dissolve in acids. If they will not dissolve in acid then I think it is highly unlikely that any reaction will take place.

This may help

https://www.science-revision.co.uk/neutralisation.html
then will the bases release OH- ions when dissolved in the acids?
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scimus63
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#4
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#4
No some insoluble bases such as metal oxides and carbonates do not contain hydroxide ions. Bases do not need to contain hydroxide ions. Alkalis are only a very small subset of bases. Alkalis are simply a set of bases which dissolve in water to form hydroxide ions. You do not need hydroxide ions to neutralise an acid. Oxide ions for example in metal oxides will neutralise, that is react with hydrogen ions present in acids to form water.
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Chenny1010
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#5
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(Original post by scimus63)
No some insoluble bases such as metal oxides and carbonates do not contain hydroxide ions. Bases do not need to contain hydroxide ions. Alkalis are only a very small subset of bases. Alkalis are simply a set of bases which dissolve in water to form hydroxide ions. You do not need hydroxide ions to neutralise an acid. Oxide ions for example in metal oxides will neutralise, that is react with hydrogen ions present in acids to form water.
I understand. Thanks!
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