Jawaban:

The rate of change of pressure with temperature for a substance in a given phase (solid, liquid, or gas) is determined by its vapor pressure curve. The vapor pressure curve shows the pressure of a substance's vapor in equilibrium with its condensed phase (solid or liquid) at a given temperature.

For water, the vapor pressure curve shows that the vapor pressure of water increases as the temperature increases. At 0 °C, the vapor pressure of water is 4.58 mm Hg. As the temperature increases, the vapor pressure of water will also increase, and the rate of change of pressure with temperature will be positive.

The sublimation heat of ice (675.7 cal/g) and the heat of vaporization of water (595.9 cal/g) are both related to the energy required to change the phase of water (from solid to vapor or liquid to vapor, respectively). These values are not directly related to the vapor pressure curve and do not affect the rate of change of pressure with temperature at a given temperature.