b) What is the melting point of the substance?
c) What is its boiling point?
d) Which portions of the graph indicates that change of state is
taking place? (You can draw the graph in the notebook and
show the portions with pencil)
e) Name the terms used for heat absorbed during change of
states involved in the above process.
plz answer fast
Answers
Answer:(a) What is the physical state of the substance at the points A, B, C ... (d) Which portions of the graph indicate that change of state is taking place? (e) Name the terms used for heat absorbed during change of states ... At point D: The substance has started boiling. ... (e) From A1 to B1 - latent heat of fusion.
Answer:
b)The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At themelting point the solid and liquid phase exist in equilibrium.
c)The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor. The boiling point of a liquid varies depending upon the surrounding environmental pressure