Titration lab go through the demo and all 5 practice screens. after you have completed the interactive lab activity at the end, record amounts for the beginning and ending amounts on the buret. 1. starting amount of naoh (ml) (this is in the buret) 25 ml (hint: this amount is not 70 ml. make sure you read the number on the buret. you have added naoh to the buret, but has anything been added to the flask yet? ) 2. ending amount of naoh (ml) 38 ml subtract these two numbers to get the amount naoh used 32 ml