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Calcium hydroxide precipitate watch

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    Q: a reaction between calcium chloride and sodium hydroxide takes place what is the observation?

    - ok, so from the reaction calcium hydroxide and sodium chloride forms.
    according to solubility rules OH ions is slightly with Ca, Sr, and Ba.
    and salts containing Cl- ions are generally soluble.

    My ans to this question was: a colourless solution is produced.
    on the markscheme: a white precipitate is formed.

    can someone explain this to me please
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    (Original post by Exotic-L)
    Q: a reaction between calcium chloride and sodium hydroxide takes place what is the observation?

    - ok, so from the reaction calcium hydroxide and sodium chloride forms.
    according to solubility rules OH ions is slightly with Ca, Sr, and Ba.
    and salts containing Cl- ions are generally soluble.

    My ans to this question was: a colourless solution is produced.
    on the markscheme: a white precipitate is formed.

    can someone explain this to me please
    You have already answered this in your solubility 'rules'.

    Calcium hydroxide is only slightly soluble, so you will get a white precipitate and a saturated solution.
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    (Original post by charco)
    You have already answered this in your solubility 'rules'.

    Calcium hydroxide is only slightly soluble, so you will get a white precipitate and a saturated solution.
    thanks for the reply, so when does OH ion dissolve completely when added to a group 2 element?
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    As you go down the group 2, the more soluble it becomes.
 
 
 
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