Asked by Anonymous

The reaction OH- + NH4+ = H20 + NH3 is kinetically first order in both reactants' concentrations. The rate constant is 2e10 1/M s. If 50 ml of .01 M NaOH is mixed with 50 ml of .01 M NH4CL, find the time required for the OH- concentration to reach 1e-4 M.
Answered by DrBob222
It starts at 0.01/2 = 0.005 and you want it to go to 1E-4
ln(5E-3/1E-4) = 2E10*t
Solve for t.
Answered by Anonymous
Why do you divide .01 by 2. Shouldn't you divide by 1 because 50 ml+50ml=1L
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