Write a latent heat unit and dimensional formula. On what does the value of latent heat depend ?
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 sıgnificance ?
$(d)$ Is $CO _{2}$ solid, liquid or gas at $(a)\;-70\,^{\circ} C$ under $1\; atm$, $( b )\;-60\,^{\circ} C$ under $10 \;atm,$ $(c)$ $15\,^{\circ} C$ under $56$ atm ?
What is vapourization ? What is normal boiling point ?
At atmospheric pressure, the water boils at $100°C$. If pressure is reduced, it will boil at
What is sublimation ? Give name of sublimation substances.
When the pressure on water is increased the boiling temperature of water as compared to $100°C$ will be