This graph in the figure (Figure 1) shows how the temperature of an initially solid sample changes as time goes by when it is placed above a flame that delivers a constant heating power (that is, a fixed amount of energy input in the form of heat each second). The process occurs in five distinct steps:
Increase the temperature of the solid until it reaches its melting temperature.
Melt the solid to form a liquid, maintaining a constant temperature.
Increase the temperature of the liquid until it reaches its boiling temperature.
Boil away all the liquid to form a gas, maintaining a constant temperature.
Increase the temperature of the gas (this assumes that the gaseous sample is confined).
Part A
Use the graph to rank the sizes of the following:
specific heat of the solid, cs
specific heat of the liquid, cl
specific heat of the gas, cg
Keep in mind that energy is being delivered to the system in the form of heat at a constant rate by the flame.
1 answer
s