Question

For which of the following aqueous solutions would one expect to have the largest van't Hoff factor (i)?

A.0.110 m K₂SO₄

B.0.110 m NaCl

C.1.100 m K₂SO₄

D.1.100 m C₆H₁₂O₆ (glucose)

E.1.100 m NaCl

Answer 1

Van;t Hoff factor refer to no of ions formed in solution

for K2SO4 ,there will be 2K+ and 1SO4-, total of 3 ions, nof particles in moles= 3*0.11=0.33moles

0.11M NaCl, there will be 1 Na+ and 1 Cl-, total of 2 ions,   no of particles in moles =2*0.11=0.22 moles

for K2SO4 again, it is 3., no of partilcles in moles = 3*1.1= 3.3 moles

for C6H12O6, a covalent compound, van't Hoff factor is 1. hence nof moles = 1.1*1=1.1

for 1.1 NaCl, no of particles in moles = 1.1*2= 2.2

highest is 1.1 m K2SO4.