Answers

2014-08-09T16:46:00+05:30
Acetic acid is a weak acid hence option (d) is correct .

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2014-08-11T20:39:22+05:30
When an uncharged weak acid is added to water, a homogeneous equilibrium forms in which aqueous acid molecules, HA(aq), react with liquid water to form aqueous hydronium ions and aqueous anions, A-(aq). The latter are produced when the acid molecules lose H+ ions to water.HA(aq)  +  H2O(l)      H3O+(aq)  +  A-(aq)
so ans is d becuse acetic acid is weak acid
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