Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryIonic Equilibria3 Marks
Question
What are acids and bases according to Arrhenius theory ?
✓
Answer
According to Arrhenius theory:
Acid: It is a substance which contains hydrogen and on dissolving in water produces hydrogen ions $\left( H ^{+}\right)$E.g. $HCl$
$
HCl _{( aq )} \rightleftharpoons H _{( aq )}^{+}+ Cl _{( aq )}^{-}
$
Base : It is a substance which contains $OH$ group and on dissolving in water produces hydroxyl ions $\left( OH ^{-}\right)$. E.g. $NaOH$
$
NaOH _{( aq )} \rightleftharpoons Na _{( aq )}^{+}+ OH _{( aq )}^{-}
$
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