Question

What is the value of the Van’t Hoff factor (i) for solutes that dissociate in water? *

(a) > 1

(b) < 1

(c) 0

(d) Not defined​

Answer 1

Answer:

Explanation:<1

Answer 2

The value of the Van’t Hoff factor (i) for solutes that dissociate in water is (a) > 1.

• Vant's Hoff factor is the number of molecules after dissociation or association to the number of molecules taken initially.
• It is used to compare the boiling point and melting point of the two substances. higher the value of i for the two compounds having the same molarity higher will be the boiling point.
• For example, NaCl and KCl both have a value of i = 2. because NaCl dissociated into Na+ and Cl- while KCl into K+ and Cl-.
• The value of i is 1 for urea and glucose as they are non-polar (can't dissociate in water) and several molecules remain the same which is 1.
• For associating molecules such as benzoic acid the vant's Hoff factor is less than 1.