For which of the following is the van't hoff factor 2, assuming complete dissociation? a)calcium phosphateb)aluminum chloridec)calcium chlorided)sodium chloride

Van't Hoff factor is 2, in the sodium chloride

Explanation:

Let's raise the dissociations

We have 5 moles of ions

We have 4 moles of ions

We have 3 moles of ions

We have 2 moles of ions

*tilts head* sounds more like a statement

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm