Question
Define :
Base
✓
Answer
A base is a substance which on dissolving in water gives rise to the OW ion as the only
$
\begin{aligned}
& NaOH _{( s )} \underset{\text { Water }}{\text { (dissociation) }} Na _{( aq )}^{+}+ OH _{( aq )}^{-} \\
& \text {anion. For, } NaOH _1 Ca ( OH )_2 Ca ( OH )_{2( s )} \frac{\text { Water }}{(\text { dissociation) }}> Ca _{(\text {aq })}^{2+}+2 OH _{(\text {(aq) }}^{-} \\
&
\end{aligned}
$
$
\begin{aligned}
& NaOH _{( s )} \underset{\text { Water }}{\text { (dissociation) }} Na _{( aq )}^{+}+ OH _{( aq )}^{-} \\
& \text {anion. For, } NaOH _1 Ca ( OH )_2 Ca ( OH )_{2( s )} \frac{\text { Water }}{(\text { dissociation) }}> Ca _{(\text {aq })}^{2+}+2 OH _{(\text {(aq) }}^{-} \\
&
\end{aligned}
$
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