1.

Determine the equilibrium constant for the reaction : HF(aq)+NH_3(aq)toNH_4^(+)(aq)+F^(-)(aq) K_a=6.9xx10^(-4) NH_3(aq)+H_2O(l)toNH_4^(+)(aq)+OH^(-)(aq) K_b=1.8xx10^(-5) 2H_2O(l)toH_3O^(+)(aq)+OH^(-)(aq) K_w=1.0xx10^(-14)

Answer»

`1.2xx10^(-8)`
`1.2xx10^(6)`
`8.1xx10^(7)`
`3.8xx10^(15)`

Answer :B


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