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Acids,Bases and Salts — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryAcids,Bases and Salts4 Marks
Question
Write balanced equations for the following reactions:
(i) Potassium hydrogen carbonate and dilute sulphuric acid.
(ii) Copper oxide and dilute hydrochloric acid.
(iii) Manganese(IV) oxide and concentrated hydrochloric acid.
(iv) Sodium nitrate and concentrated sulphuric acid
✓

Answer

(i) $2 KHCO _3$ (s) $+ H _2 SO _4($ dil $) \longrightarrow K _2 SO _4( aq )+2 H _2 O ( l )+2 CO _2(g)$
(ii) $CuO ( s )+2 HCl ($ dil. $) \longrightarrow CuCl _2( aq )+ H _2 O ( l )$
(iii) $MnO _2$ (s) +4 HCl (conc.) $\longrightarrow MnCl _2( aq )+2 H _2 O ( l )+ Cl _2(g)$
(iv) $2 NaNO _3(s)+ H _2 SO _4$ (conc.) $\xrightarrow{\text { heat }} Na _2 SO _4( aq )+2 HNO _3(g)$

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