Question

The fluorocarbon compound c2cl3f3 has a normal boiling point of 47.6°c. the specific heats of c2cl3f3(l) and c2cl3f3(g) are 0.91 j/g·k and 0.67 j/g·k, respectively. the heat of vaporization for the compound is 27.49 kj/mol. calculate the heat required to convert 36.0 g of c2cl3f3 from a liquid at 10.00°c to a gas at 108.00°c.

Answer 1

To find the total heat required to convert 36.0 g of C2Cl3F3 from a liquid at 10.00°C to a gas at 108.00°C, calculate the heat to warm the liquid to its boiling point, the heat of vaporization, and the heat to warm the vapor to the final temperature, then sum these values.

Step-by-step explanation:

To calculate the heat required to convert 36.0 g of C2Cl3F3 from a liquid at 10.00°C to a gas at 108.00°C, we need to consider three steps: heating the liquid to its boiling point, vaporizing the liquid, and heating the vapor to the final temperature.

1. First, calculate the heat needed to raise the temperature of the liquid from 10.00°C to its boiling point of 47.6°C using the specific heat of the liquid (q = m⋅c⋅ΔT).
2. Second, use the heat of vaporization to find the heat required to vaporize the liquid at its boiling point.
3. Finally, calculate the heat needed to raise the temperature of the vapor from the boiling point to 108.00°C using the specific heat of the gas.

Sum these values to find the total heat required.

Answer 2

To raise the liquid temperature to the point of boiling take 1231.776 joules of energy. To convert to a gas takes 5320.645 joules. To raise to 108 degrees Celsius takes 1456.848 joules. Total amount of energy needed (as heat) equals 8009.269 joules or 8.009 kj.