QUESTION IMAGE
Question
7
écrivez les équations de dissociation électrolytique des substances suivantes :
a) ( mathrm { al } ( mathrm { oh } ) _ { 3 ( mathrm { s } ) } )
b) ( mathrm { be } _ { 3 } mathrm { p } _ { 2 ( mathrm { s } ) } )
c) ( mathrm { fef } _ { 3 ( mathrm { s } ) } )
d) ( mathrm { mgo } _ { ( mathrm { s } ) } )
e) ( mathrm { lih } _ { ( mathrm { s } ) } )
f) ( mathrm { ch } _ { 3 } mathrm { cooh } _ { ( 1 ) } )
g) ( mathrm { hno } _ { 3 ( 1 ) } )
h) ( mathrm { na } _ { 2 } mathrm { co } _ { 3 ( mathrm { s } ) } )
Step1: Équation de dissociation de \( \text{Al(OH)}_3 \)
\( \text{Al(OH)}_3(s)
ightleftharpoons \text{Al}^{3+}(aq) + 3\text{OH}^-(aq) \)
Step2: Équation de dissociation de \( \text{Be}_3\text{P}_2 \)
\( \text{Be}_3\text{P}_2(s)
ightleftharpoons 3\text{Be}^{2+}(aq) + 2\text{P}^{3-}(aq) \)
Step3: Équation de dissociation de \( \text{FeF}_3 \)
\( \text{FeF}_3(s)
ightleftharpoons \text{Fe}^{3+}(aq) + 3\text{F}^-(aq) \)
Step4: Équation de dissociation de \( \text{MgO} \)
\( \text{MgO}(s)
ightleftharpoons \text{Mg}^{2+}(aq) + \text{O}^{2-}(aq) \)
Step5: Équation de dissociation de \( \text{LiH} \)
\( \text{LiH}(s)
ightleftharpoons \text{Li}^+(aq) + \text{H}^-(aq) \)
Step6: Équation de dissociation de \( \text{CH}_3\text{COOH} \)
\( \text{CH}_3\text{COOH}(l)
ightleftharpoons \text{CH}_3\text{COO}^-(aq) + \text{H}^+(aq) \)
Step7: Équation de dissociation de \( \text{HNO}_3 \)
\( \text{HNO}_3(l)
ightleftharpoons \text{H}^+(aq) + \text{NO}_3^-(aq) \)
Step8: Équation de dissociation de \( \text{Na}_2\text{CO}_3 \)
\( \text{Na}_2\text{CO}_3(s)
ightleftharpoons 2\text{Na}^+(aq) + \text{CO}_3^{2-}(aq) \)
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a) \( \text{Al(OH)}_3(s)
ightleftharpoons \text{Al}^{3+}(aq) + 3\text{OH}^-(aq) \)
b) \( \text{Be}_3\text{P}_2(s)
ightleftharpoons 3\text{Be}^{2+}(aq) + 2\text{P}^{3-}(aq) \)
c) \( \text{FeF}_3(s)
ightleftharpoons \text{Fe}^{3+}(aq) + 3\text{F}^-(aq) \)
d) \( \text{MgO}(s)
ightleftharpoons \text{Mg}^{2+}(aq) + \text{O}^{2-}(aq) \)
e) \( \text{LiH}(s)
ightleftharpoons \text{Li}^+(aq) + \text{H}^-(aq) \)
f) \( \text{CH}_3\text{COOH}(l)
ightleftharpoons \text{CH}_3\text{COO}^-(aq) + \text{H}^+(aq) \)
g) \( \text{HNO}_3(l)
ightleftharpoons \text{H}^+(aq) + \text{NO}_3^-(aq) \)
h) \( \text{Na}_2\text{CO}_3(s)
ightleftharpoons 2\text{Na}^+(aq) + \text{CO}_3^{2-}(aq) \)