Which of the following is the weakest base?Select answer from the options belowethoxide ionacetate ion  hydroxide ion  water

The weakest base among the options provided is water.

Here's a step-by-step explanation:

1. Ethoxide ion (C2H5O-) is a strong base because it is the conjugate base of a weak acid (ethanol), and it can easily donate its lone pair of electrons.

2. Acetate ion (CH3COO-) is also a strong base because it is the conjugate base of a weak acid (acetic acid), and it can easily donate its lone pair of electrons.

3. Hydroxide ion (OH-) is a strong base because it can easily donate its lone pair of electrons.

4. Water (H2O), on the other hand, is a weak base because it can only accept protons (H+) rather than donate electrons. It is amphoteric, meaning it can act as both a base and an acid, but it is not as strong a base as the other options.