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In which of the following reactions does water act as a Lewis Base? And reasons why?...

In which of the following reactions does water act as a Lewis Base? And reasons why?

1. HB+(aq)+H20(l)<---->B(aq)+H3O+(aq)

2.NH3(aq)+H2O(l)<--->NH4+(aq)+OH^-1(l)

3. Al^3+(aq)+6H20(l)<----->[Al(H2o)6]^3+(aq)

4.CO2(g)+H20(l)<------->H2CO3(aq)

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Answer #1

According to lewis acid-base theory, which accepts a proton is a base.

HB+(aq)+H2O(l)<---->B(aq)+H3O+(aq) in this reaction, H2O accepting a proton from HB+ and forming H3O+. so here it is acting as a lewis base.

Thank you and good luck.

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