(a)
Interpretation:The denser substance out of graphite and diamond needs to be determined on the basis of given P-T curve.
Concept Introduction:All substances can mainly exist in three phases; solid, liquid and gas. These three phases can convert into each other by the application of temperature and pressure such as heating of solid leads to the conversion to liquid and then gaseous
Similarly, the gases can be compressed at high pressure to liquefy. The interconversion of three phases of substance can be shown on the phase diagram.
(b)
Interpretation:Themore denser substance out of graphite and liquid carbon needs to be determined on the basis of given P-T curve.
Concept Introduction:All substances can mainly exist in three phases; solid, liquid and gas. These three phases can convert into each other by the application of temperature and pressure such as heating of solid leads to the conversion to liquid and then gaseous state of matter.
Similarly, the gases can be compressed at high pressure to liquefy. The interconversion of three phases of substance can be shown on the phase diagram.
(c)
Interpretation:The reason of presence of two triple points needs to be explained in the P-T curve for carbon.
Concept Introduction:All substances can mainly exist in three phases; solid, liquid and gas. These three phases can convert into each other by the application of temperature and pressure such as heating of solid leads to the conversion to liquid and then gaseous state of matter.
Similarly, the gases can be compressed at high pressure to liquefy. The interconversion of three phases of substance can be shown on the phase diagram.
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Chapter 8 Solutions
Physical Chemistry
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