For a 0.001 molar solution of NH4HCO3, the van’t Hoff factor would be about

a. 1.

b. 2.

c. 3.

d. 4.

e. 5.

I think you think right.

To determine the van't Hoff factor, we need to understand the concept and calculate it based on the given information.

The van't Hoff factor is a measure of the extent of dissociation of a solute in a solution. It represents the number of particles into which one molecule of the solute breaks down when it dissolves in the solvent.

In the case of NH4HCO3, it dissociates into ions when it dissolves in water. The balanced equation for the dissociation is:
NH4HCO3 -> NH4+ + HCO3-

From the balanced equation, we can see that one molecule of NH4HCO3 breaks down into two ions: NH4+ and HCO3-. Therefore, the van't Hoff factor for NH4HCO3 is 2.

Hence, the correct answer is b. 2.

i think 2