Question

5.
During phase change of a substance at a constant pressure
a) Temperature decreases
b) Temperature increases
c) No change in temperature during the change
d) Does not depend on temperature.​

Answer 1

The change of phase always occurs with a change of heat. ... The quantity of heat absorbed or released when a substance changes its physical phase at constant temperature (e g. From solid to liquid at melting point or from liquid to gas at boiling point) is termed as its latent heat.

Hope it helps

Answer 2

Answer:

During phase change of a substance at a constant pressure does not depend on temperature.​i.e.option(d).

Explanation:

The energy of the particles is given as,

$E=\frac{3}{2} kT$      (1)

Where,

E=energy of the particles

k=boltzman constant

T=temperature during which the change occurs

The kinetic energy of particles increases as temperature rises, but when a change of state occurs, the energy supplied to the substance by rising temperature is utilized to break the intermolecular interactions between the particles, allowing the state to change.

As a result, the temperature remains constant because all of the heat has been consumed and no additional heat has been released or absorbed.

The correct answer among the given options is (d) Does not depend on temperature.​

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