A 130.0 mL buffer solution is 0.110 M in NH3 and 0.135 M in
NH4Br. (Kb of NH3 is 1.76×10−5.)
If the same volume of the buffer were 0.255 M in NH3 and
0.400 M in NH4Br, what mass of HCl could be handled before the pH
falls below 9.00?
Please help me figure out the answer! I am on my last attempt. I
have entered the following answers and these are NOT correct:
0.0916, 0.0915, 0.094, 0.101, 0.999, 0.0999,...