Give reasons for the following:(i) A reaction/process will be spontane

1.	Give reasons for the following:(i) A reaction/process will be spontaneous when it is exothermic and randomness is increasing.(ii) The number of hydronium ions increase when one litre of water is added to 1M acetic acid.
Answer» (i) For exothermic process, ΔH is negative. Therefore, energy factor favours the process. Since randomness is increasing, therefore, it also favours the process. Since both factors are favourable, the reaction will be spontaneous and ΔG will be high -ve. (ii) 1 M acetic acid i.e. 60 gms acetic acid dissolved in 1000 mL H₂O CH₃COOH dissociated to CH₃COO^- and H₃OH₂O dissociated to H₃O⁺ and OH ion So, total no. of H₃O⁺ion increases in dissociation condition.

Give reasons for the following:(i) A reaction/process will be spontaneous when it is exothermic and randomness is increasing.(ii) The number of hydronium ions increase when one litre of water is added to 1M acetic acid.

Answer»

(i) For exothermic process, ΔH is negative. Therefore, energy factor favours the process.

Since randomness is increasing, therefore, it also favours the process. Since both factors are favourable, the reaction will be spontaneous and ΔG will be high -ve.

(ii) 1 M acetic acid i.e. 60 gms acetic acid dissolved in 1000 mL H₂O

CH₃COOH dissociated to CH₃COO^- and H₃OH₂O dissociated to H₃O⁺ and OH ion

So, total no. of H₃O⁺ion increases in dissociation condition.

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Give reasons for the following:(i) A reaction/process will be spontaneous when it is exothermic and randomness is increasing.(ii) The number of hydronium ions increase when one litre of water is added to 1M acetic acid.

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