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At 298 K and 1 atm, bromine is a liquid with a high vapor pressure, whereas chlorine is a gas. This provides evidence that, under these conditions, the forces among Br2 molecules are _______ than those among Cl2 molecules

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Explanation:

In liquids, the molecules are held by less strong intermolecular forces of attraction as compared to solids. Due to which they are able to slide past each other. Hence, they have medium kinetic energy.

In gases, the molecules are held by weak Vander waal forces. Hence, they have high kinetic energy due to which they move rapidly from one place to another leading to more number of collisions.

So, when at 298 K and 1 atm [tex]Br_{2}[/tex] exists in liquid state and [tex]Cl_{2}[/tex] exists as a gas then it means there occurs strong force of attraction between the molecules of [tex]Br_{2}[/tex] due to which it exists in liquid form.

Thus, we can conclude that at 298 K and 1 atm, bromine is a liquid with a high vapor pressure, whereas chlorine is a gas. This provides evidence that, under these conditions, the forces among [tex]Br_2[/tex] molecules are greater than those among [tex]Cl_2[/tex] molecules.

samueladesida43

The statement that at 298K and 1 atm, bromine is a liquid with a high vapor pressure, whereas chlorine is a gas provides evidence that forces among Br2 molecules are greater than those among Cl2 molecules.

FORCE OF ATTRACTION:

  • The three states in which matter can exist are solids, gases and liquids. These states of matter are made up of molecules held together by forces of attraction.

  • The force of attraction that holds the molecules of the three states of matter varies as it decreases in the following order: solids > liquids > gases.

  • Liquids possess a greater intermolecular force of attraction than gases, hence, they cannot move around freely like gases.

  • Account to this question, at 298 K and 1 atm, bromine is a liquid with a high vapor pressure, whereas chlorine is a gas. This statement reveals that forces among Br2 molecules are greater than those among Cl2 molecules.

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