Question

out of nacl and bacl2 aqueous solution , which show more relative lowering vapour pressure and why? ​

Answer 1

Answer:

According to the colligative properties,relative lowering of vapour pressure is directly proportional to the mole fraction of solute and also the Vant Hoff’s factor.Dissociation of BaCl2 in water yields three ions(one Ba2+,2Cl-),which is more than that of NaCl(2 ions).Hence,BaCl2 has a more relative lowering of pressure value.