Final answer:
The mean volume of acid required to neutralize the alkali is 25.00 mL.
Step-by-step explanation:
To calculate the mean volume of acid required to neutralize the alkali, we need to find the average volume of the acid used in the titration. From the given information, we know that the titrant volume is 25.00 mL. Thus, the mean volume of acid required is 25.00 mL.