Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be directly related to pressure volume changes.If equal moles of each gas is compressed which one would have the largest pressure volume change during condensation? Heat of vaporization also given as

Question

Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be directly related to pressure volume changes.If equal moles of each gas is compressed which one would have the largest pressure volume change during condensation? Heat of vaporization also given as

NaF(29.3kj/mol)
HCl(1.99KJ/mol
O2(0.45KJ/mol
CHCL3(9.20KJ/mol

Answer 1

The question isn't clear to me. Sorry.

Answer 2

To determine which gas would have the largest pressure volume change during condensation, we need to compare the heat of vaporization for each gas. The larger the heat of vaporization, the more energy is required to convert the gas into a liquid, resulting in a larger pressure-volume change.

Here are the given values for the heat of vaporization:
NaF: 29.3 kJ/mol
HCl: 1.99 kJ/mol
O2: 0.45 kJ/mol
CHCl3: 9.20 kJ/mol

To calculate the pressure volume change, we can assume that the gases are initially at the same pressure and volume. When condensation occurs, the volume of the gas decreases, causing the pressure to increase.

The pressure-volume change can be calculated using the equation: ΔPΔV = nΔHvap, where ΔP is the change in pressure, ΔV is the change in volume, n is the number of moles of gas, and ΔHvap is the heat of vaporization.

Since we are comparing equal moles of each gas, n will be the same for all gases.

Let's calculate the pressure volume change for each gas:

For NaF:
ΔPΔV = nΔHvap
ΔPΔV = 1 mol * 29.3 kJ/mol
ΔPΔV = 29.3 kJ

For HCl:
ΔPΔV = nΔHvap
ΔPΔV = 1 mol * 1.99 kJ/mol
ΔPΔV = 1.99 kJ

For O2:
ΔPΔV = nΔHvap
ΔPΔV = 1 mol * 0.45 kJ/mol
ΔPΔV = 0.45 kJ

For CHCl3:
ΔPΔV = nΔHvap
ΔPΔV = 1 mol * 9.20 kJ/mol
ΔPΔV = 9.20 kJ

Comparing the pressure volume changes, we can see that NaF has the largest pressure volume change during condensation, followed by CHCl3, HCl, and O2. NaF has the highest heat of vaporization, so it requires the most energy to convert from a gas to a liquid, resulting in the largest pressure volume change.

Therefore, NaF would have the largest pressure volume change during condensation among the given gases.