The voltage for the following cell is +0.731 V. Find Kb for the organic base RNH2. Use EscE 0.241V. Pt(s)H2(1.00 atm) |RNH2 (0.100 M), RNH (0.0500 M) || SCE

Complete Question

The complete question is shown on the first uploaded image  

The  value is  

Explanation:

From the question we are told that

   The  voltage of the cell is  

Generally is mathematically represented as  

Where    is the equilibrium constant for this auto-ionization of water with a value  

Generally the is mathematically represented as

=>    

=>      

This   is mathematically represented as

Where n is the number of moles which in this question is  n = 1

         So  

=>      

So  

=>  

=>    

false

because it does not have the potential to be entirely used up

i believe the answer is a.