Which of the pairs of compounds below is most likely to form a solution when mixed? view available hint(s)which of the pairs of compounds below is most likely to form a solution when mixed? water and ammonia (nh3)sodium chloride (nacl) and pentane (c5h12)?

             Water and Ammonia will form Solution.

Explanation:

Solution is a Homogeneous mixture of two or more components. The solute present in the solvent can not be distinguished neither microscopically nor visually. This formation of Homogeneous mixture usually takes place due to greater intermolecular interactions between the Solute and Solvent. Hence, in given scenario we are not given with the amount of components, therefore we can decide on the basis of interactions between the components. 
 
In case of Water and Ammonia there exist a stronger type of intermolecular interactions called as Hydrogen Bond Interactions as in both compounds Hydrogen atoms are attached to more electronegative atoms like Oxygen and Nitrogen. Hence, as Like Dissolves Like, so these two components will form a Solution.

While in second case, Pentane is a non polar compound while Sodium Chloride is an ionic compound with positive Na and negative Cl. So, these two compounds cannot interact with each other, Hence will fail to form a solution and results in the formation of Suspension.