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Da Apprentice
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When Metals (specifically Magnesium) oxidise within water would this increase or decrease the accidity of the water around it?
When Metals (specifically Magnesium) oxidise within water would this increase or decrease the accidity of the water around it?
Here are two (unbalanced) reactions:
CaO + H2O ---> Ca(OH)2
Na2O + H2O ---> NaOH
Does that make the answer evident?
(OK: the first one is balanced, but only by accident.)
Yeah I think so. So the reaction involved would be MgO + H2O ---> Mg(OH)2
And this is basic because of the hydroxide? Right?
(this is actually the opposite to what i would've thought based upon the results of the experiment I did)
Yes: Magnesium hydroxide will dissolve in water to increase the [OH-], and that is one of the definitions of a base.
I am more used to using a pH meter than the test strips (nor can I read the writing on the strips). What was the experiments and what ere the results?
You could also find pH precisely with a titration using an indicator.
No, you can't. Titration can be used to determine amount of acid, but not pH.