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Water ice exists in several different fo...

Water ice exists in several different form depending on the pressure and temperature. A proton of the phase diagram for ice I, ice III and liquid water is shown below. Which statement about the densities of these three phases is correct ?

A

The density of liquid water is greater than the densities of either ice I or ice III.

B

The density of ice I is greater than the densities of either ice III or liquid water.

C

The density of ice III is greater than the densities of either ice I or liquid water

D

The densities of ice I and ice III are equal and greater than the density of liquid water.

Text Solution

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The correct Answer is:
C
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Each phase of a material can exits only in certain regions of pressure and temperature . P-T phase diagrams, in which pressure is plotted versus temperature, show the regions corresponding to various phases and phase transformations . P-V diagrams, on the other hand , can be used to study pressure volume relationship at a constant temperature. If the liquid and gaseous phases of a pure substances are heated together in a closed container, both the temperature and the vapor pressure will increase until a point is reached at which the two phases can no longer be distinguished from one another. The temperature and pressure at which this occurs are called the critical temperature and pressure. Exceeding either of these parameters, by itself ,will cause the "gas"//"liguid" phase transition to disappear. if the other variable is then changed as well, while the first variable is maintained above its critical point , a gradual transition will occur between the gaseous and liquid phases, with no clear boundary.(The liquid and solid phases, on the other hand , maintain a distinct boundary at all pressure above the triple point). Shown in figure is a combined P-T phase diagram for material A and B . If heat is added to solids A and B , each in a container that is open to the atmosphere :-

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GRB PUBLICATION-GRAPHICAL INTERPRETATION-Chemical Equilibrium
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  2. What quantity is represented by the slope of the line in this graph of...

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  3. Water ice exists in several different form depending on the pressure a...

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  4. Under certain conditions, CO(2) melts rather than sublimes, CO(2) whic...

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  5. Which of the following graphs is the correct phase diagram of a substa...

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  6. What is the normal melting point of the substance represented by the p...

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  7. Which points in this phase diagram represent conditions of temperature...

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  8. The curve shown results when a liquid is cooled. What temperature is c...

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  9. According to the solubility curve shown, how many grams of solute can ...

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  10. According to the phase diagram, what would be the effect of increasing...

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  11. According to the phase diagram shown, in what state does not represent...

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  12. Which statement is correct about the substance represented by this pha...

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  13. According to this phase diagram, which phases can exist at pressure lo...

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  14. According to the phase diagram shown, where does a mixture of solid an...

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  15. Supercritical carbon dioxide exists at which point on the accompanying...

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  16. Which point on the phase diagram represents the normal boiling point?

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  17. What can be concluded about the substance represented by this phase di...

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  18. Which segment of the heating curve obtained at constant pressure corre...

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  19. Which graph best represents the vapour pressure of water as a function...

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  20. According to the graph (ln vapour pressure us 1//T) what can be conclu...

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