The correct answer is option B. i.e. E°cell > 0 = spontaneous reaction.
The spontaneous reactions always have positive voltage and the energy released in the reaction is used up to do work.
Answer: true
explanation:
A graduated cylinder must be tipped over to add small amounts, and it would be very difficult to control the amount that is dropped into the analyte. On the other hand, a buret has a stopcock that can be controlled much more easily, by simply turning or pressing on it (depending on the type of buret). This allows a more controlled release, which is essential because one slows down the rate of dropping the titrant when close to the end point of titration.
Windmills producing energy