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Acids,Bases and Salts — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryAcids,Bases and Salts3 Marks
Question
State two chemical properties each with equations for (i) a solution containing H+(aq) ions (ii) a solution containing OH- ions.
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Answer

(i) The solution containing H+(aq) ions is an acidic solution.
(1) It reacts with active metals to liberate hydrogen gas.
Zn + 2H+ → Zn2+ + H2
(2) It reacts with metallic carbonates to liberate carbon dioxide gas and water.
$CO _3{ }^{2-}+2 H ^{+} \longrightarrow H _2 O + CO _2$
(ii) The solution containing OH- ions is basic (alkaline) in nature.
(1) It react with acids to form salt and water as the only products.
ХОН + HCI → XCI + H2O
(2) It reacts with ammonium salts on warming and liberates ammonia gas.
NH4Cl + XOH → XCI + NH3 + H2O

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