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Classify each of the following substances into an acid or base or both and mention the concept/concepts on the basis of which you can do so. `(i) HCl(aq) " " (ii) NH_(3)(g) " " (iii) Na_(2)CO_(3)(aq) " " (iv)CH_(3)CO OH(aq)` `(v)CO_(2)(g) " " (vi)BF_(3) " " (vii)Ag^(+) " " (viii)CN^(-)` (ix)`H_(2)O " " (x)H_(2)SO_(4) " (xi)" HCO_(3)^(-) " (xii)"SiF_(4)` |
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Answer» (i) HCl (aq) - Acid (Arrhenius conecpt and Bronsted - Lowry concept) (ii) `NH_(3)(g) `-Base (Bronsted concept and Lewis concept) (iii) `Na_(2)CO_(3)(aq)`- Base (Bronsted concept) (iv) `CH_(3)CO OH(aq)`-Acid (Arrhenius concept and Bronsted concept) (v) `CO_(2)(g)`-Acid (Bronsted concept and Lewis concept) (vi) `BF_(3)`-Acid (Lewis concept) (vii) `Ag^(+)`- Acid (Lewis concept) (viii) `CN^(-)`- Base (Lewis concept) (ix) `H_(2)O`- Both acid and base, i.e., amphoteric (Bronsted concept) (x) `H_(2)SO_(4)`- Both acid and base, i.e., amphoteric (Bronsted concept) (xi) `CHO_(3)^(-)`- Both acid and base, i.e., amphoteric (Bronsted concept) (xii) `SiF_(4) ` - Acid (Lewis concept), as silicon can expand its octet . |
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