Question

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. A large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point

Answer 1

it is c

Step-by-step explanation:

Answer 2

Answer: A. Lower the freezing point.

Explanation: There are two ways the lowering of freezing point happens at higher pressures. From the densities it's quite obvious we're speaking of ice (0.9g/cm³) and water (1g/cm³).

Ice occupies more volume than liquid water, therefore increasing the pressure favours the liquid state over the ice state. Also at higher pressure, more air, which is a mixture of gasesgoes into solution. The more molecules of air dissolved in the water, the lower the freezing point.

It is worthy to note that water has a unique characteristic. Water unlike other substances gets a reduction in freezing point whereas others' freezing points increases ever so slightly.