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Acids, Bases and Salts — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryAcids, Bases and Salts1 Mark
Question
How would you obtain an alkali from a base.
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Answer

An alkali from a base
$Na _2 CO _3+ Ca ( OH )_2 \cdot \Delta{ }^{\prime}>2 NaOH + CaCO _3$

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