question archive Strong base is dissolved in 745 mL of 0
Strong base is dissolved in 745 mL of 0
Subject:ChemistryPrice: Bought3
Strong base is dissolved in 745 mL of 0.400 M weak acid (????a=4.96×10−5) to make a buffer with a pH of 4.15. Assume that the volume remains constant when the base is added.
HA(aq)+OH−(aq)?H2O(l)+A−(aq)
Calculate the p????a value of the acid, and determine the number of moles of acid initially present.
When the reaction is complete, what is the concentration ratio of conjugate base to acid?
How many moles of strong base were initially added?
