Give your answer accurate to two decimal places.© BrainMass Inc. brainmass.com October 9, 2019, 11:42 pm ad1c9bdddf
What is the Final pH of NaOH and HA when mixed together?
What is the final pH at 25oC when 93.0 mL of 0.133 mol/L NaOH(aq) and 50.0 mL of 0.193 mol/L HA(aq) are mixed. Assume that HA is a weak monoprotic acid with pKa=5.31 at 25C.
Give your answer accurate to two decimal places.
NaOH + HA H2O + NaA
Moles of NaOH = 0.0930 L × 0.133 mol/L = 0.012369 mol
Moles of HA = 0.0500 L × 0.193 mol/L = 0.00965 mol
Moles of NaA produced ...
In this exercise, students are asked to calculate the final pH when an unequal number of moles of a strong base NaOH and a weak acid HA are mixed, with the pKa of the weak acid given