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satela [25.4K]
2 years ago
15

Explain the effect of strong intermolecular forces on each of these parameters: (a) critical temperature;

Chemistry
1 answer:
Delicious77 [7]2 years ago
7 0
  • (A) The molecules can no longer be condensed because they are moving too quickly at the critical temperature.
  • Because the forces are insufficient to stop molecular motion, this temperature drops with weaker intermolecular forces.
  • Alternately, the critical temperature rises as intermolecular forces increase.

b) The boiling point rises as intermolecular forces do because it becomes harder and more energy-intensive to separate molecules from the liquid phase.

(C) For the same reason as in b), the vapor pressure falls as intermolecular forces rise.

  • Strong intermolecular forces prevent molecules from entering the vapor phase easily at any given temperature, resulting in a decrease in vapor pressure.

d) The heat of vaporization rises as intermolecular forces increase because more energy is required to separate molecules from one another.

Learn more about critical temperature

brainly.com/question/16992351

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<u>The complete question is -</u>

Explain the effect of strong intermolecular forces on each of these parameters: (a) critical temperature, (b) boiling point, (C ) vapor pressure, (d) heat of vaporization

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Complete Question

The complete question is shown on the first uploaded image

Answer:

The mass is m =  0.0349 \ g

Explanation:

From the question we are told that

   The Henry's Law constant is  k = 2.4 *10^{10} M/atm

   The volume of water is V = 525 \ ml = 0.525 \ L

   The partial pressure is  P =  1.90 \ atm

   The temperature is T  = 25 ^oC

Henry's  law is mathematically represented as

       C  = P * k

Where C is  the concentration of sulfur hexafluoride(SP)

substituting value

        C = 1.90 * 2.4*10^{-4}

        C = 4.56*10^{-4} \ M

The number of moles of  SP is mathematically represented as

        n = C * V

substituting value

       n =  0.525 * 4.56*10^{-4}

       n =  2.39 *10^{-4} \ moles

The mass of SP that dissolved is

          m = n * Z

Where Z is the molar mass of SP which has a constant value of

           Z = 146 g/mole

So

         m =  2.394*10^{-4} * 146

         m =  0.0349 \ g

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When the molecules in a body move with increased speed, it's possible that the body will change from a
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The answer is B
liquid to a gas

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Answer:

Explanation:

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One of the nuclides in spent nuclear fuel is U-235, an alpha emitter with a half-life of 703 million years. How long will it tak
VashaNatasha [74]

Answer:

1.49 × 10⁹ years

Explanation:

Step 1: Calculate the rate constant (k) for the nuclear decay of U-235

The decay follows first-order kinetics with a half-life (t1/2) of 703 × 10⁶ years. We can calculate "k" using the following expression.

k = ln2/ t1/2 = ln2 / 703 × 10⁶ y = 9.86 × 10⁻¹⁰ y⁻¹

Step 2: Calculate the time elapsed (t) so that the final amount ([U]) is 23.0% of the initial amount ([U]₀)

For first order kinetics, we will use the following expression.

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