Which compound does not dissociate

a. table sugar
b. NaCl
C. MgCl2
D. CaCl2

I say b becasue it dissociates 90%, right?

No. NaCl dissociates as does MgCl2 as does CaCl2. Table sugar is the only one you have listed that does NOT dissociate.

if something dissociates then that means that it completely dissolves in a solution. so DrBob222 is completely correct as NaCl, MgCl2 and CaCl2 all dissolve. unlike table sugar. check a solubility table if you are ever unsure.

To determine which compound does not dissociate, we need to understand the concept of dissociation. Dissociation is the process in which an ionic compound breaks apart into its individual ions when dissolved in water.

Table sugar, also known as sucrose (C12H22O11), does not dissociate. It is a molecular compound made up of covalent bonds between carbon, hydrogen, and oxygen atoms. When dissolved in water, it remains as intact sugar molecules without breaking apart into ions.

On the other hand, NaCl (sodium chloride), MgCl2 (magnesium chloride), and CaCl2 (calcium chloride) are all ionic compounds. They dissociate into their respective ions when dissolved in water.

So, the correct answer is a. table sugar (C12H22O11) does not dissociate.