Potassium chloride (KCl), sodium sulfate (Na2SO4), glucose (C6H12O6), and sodium phosphate (Na3PO4) are soluble in water. Rank the solution from the lowest impact on phase change temperatures to highest based on colligartve properties if they all have the same molarity concentration. a. KCl
b. Na2SO4
c. C6H12O6
d. CO2
e. (NH4)3PO4

(NH4)3PO4 > Na2SO4 > KCl > C6H12O6 > CO2

Explanation:

Colligative properties are those properties that depend on the amount of solute present in the system.

Usually, the more the number of particles in the system, the greater the impact of colligative properties on phase change temperatures if all the solutions have the same molarity concentration.

Hence, the order of impact on phase change temperatures is as follows; (NH4)3PO4 > Na2SO4 > KCl > C6H12O6 > CO2

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hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.