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Calcium hydroxide precipitate

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
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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Exotic-L
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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?
As you go down the group 2, the more soluble it becomes.

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