a 25.01(+and- 0.02) ml sample of an unknown acid was titrated using a standardized solution of 0.1106 M (+and - 0.1%) NaoH .
1) if it took 18.72 (+ and - 0.05) ml of the base to reach the equivalence point. what was the concentration of unknown acid?
2) what is the uncertainity associated with this determination?