Class 11Physics10-1.Thermometry, Thermal Expansion and CalorimetryMix Examples-Thermometry, Thermal Expansion and Calorimetry
MediumWhat is sublimation? Give names of sublimable substances.
(N/A) Sublimation is the process in which a substance changes directly from the solid state to the vapour state without passing through the intermediate liquid state.
Conversely,the process of changing directly from vapour to solid is also often referred to as sublimation or deposition.
Examples of substances that undergo sublimation include dry ice (solid $CO_{2}$),iodine $(I_{2})$,naphthalene $(C_{10}H_{8})$,and camphor.
During the sublimation process,the solid and vapour phases of the substance coexist in thermal equilibrium at a specific temperature and pressure.
Conversely,the process of changing directly from vapour to solid is also often referred to as sublimation or deposition.
Examples of substances that undergo sublimation include dry ice (solid $CO_{2}$),iodine $(I_{2})$,naphthalene $(C_{10}H_{8})$,and camphor.
During the sublimation process,the solid and vapour phases of the substance coexist in thermal equilibrium at a specific temperature and pressure.
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Similar Questions
Answer the following questions based on the $P$ - $T$ phase diagram of carbon dioxide:
$(a)$ At what temperature and pressure can the solid,liquid and vapour phases of $CO_{2}$ co-exist in equilibrium?
$(b)$ What is the effect of decrease of pressure on the fusion and boiling point of $CO_{2}$?
$(c)$ What are the critical temperature and pressure for $CO_{2}$? What is their significance?
$(d)$ Is $CO_{2}$ solid,liquid or gas at $(i)$ $-70^{\circ}C$ under $1\;atm$,$(ii)$ $-60^{\circ}C$ under $10\;atm$,$(iii)$ $15^{\circ}C$ under $56\;atm$?
$(a)$ At what temperature and pressure can the solid,liquid and vapour phases of $CO_{2}$ co-exist in equilibrium?
$(b)$ What is the effect of decrease of pressure on the fusion and boiling point of $CO_{2}$?
$(c)$ What are the critical temperature and pressure for $CO_{2}$? What is their significance?
$(d)$ Is $CO_{2}$ solid,liquid or gas at $(i)$ $-70^{\circ}C$ under $1\;atm$,$(ii)$ $-60^{\circ}C$ under $10\;atm$,$(iii)$ $15^{\circ}C$ under $56\;atm$?
Medium
View Solution$A$ beaker is completely filled with water at $4^{\circ}C$. It will overflow if it is:
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View SolutionHeat is being supplied at a constant rate to a sphere of ice which is melting at the rate of $0.1 \,g/s$. It melts completely in $100 \,s$. The rate of rise of temperature of the resulting water thereafter will be ............ $^{\circ}C/s$.
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