The reaction of carbon dioxide with hydroxide ion is aqueous solution is postulated to occur according...

Question

Question

The reaction of carbon dioxide with hydroxide ion is aqueous solution is postulated to occur according to the mechanism:

1) CO2 (aq) + OH^-(aq) ==> HCO3^-(aq) (slow)

2) HCO3^-(aq)+OH^-(aq) ==> CO3^2-(aq) + H2O (l) (fast)

a) write the balanced chemical equation for the overall reaction?

b) identify any reaction intermediates?

c) predict the rate law of the overall reaction.?

Answer 1

Answer #1

CO₂ + OH^- ----------------------------> HCO3^- ( slow)

HCO3^- + OH^- ---------------------------> CO₃^2- + H₂O (fast)

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CO₂ + 2 OH^- -----------------------------> CO₃^2- + H₂O => overall balanced equation

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b) the intermediate means formed and consumed during the reaction in the above reactions the intermediate is => HCO3^-

c) rate is depends on the slow step which is rate determining step

so rate = K [CO₂ ] [OH^-]

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Answer 2

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