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# From the data below, calculate the total heat (in J) ISBN: 9780073511085 71

## Solution for problem 16P Chapter 12

Principles of General Chemistry | 2nd Edition

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Problem 16P

From the data below, calculate the total heat (in J) needed to convert 0.333 mol of gaseous ethanol at 300°C and 1 atm to liquid ethanol at 25.0°C and 1 atm: Step-by-Step Solution:
Step 1 of 3

Solution 16P

Here we have to calculate the total heat (in J) needed to convert 0.333 mol of gaseous ethanol at 300°C and 1 atm to liquid ethanol at 25.0°C and 1 atm.

boiling point at 1 atm:   78.5oC = 40.5 kJ/mol

Cgas : 4.21 J/g oC                    C liquid  = 2.45 J/goC

Step-1

Given:

Mol of ethanol = 0.333 mol

Molar mass of ethanol = 46.07 g/mol

Mass of ethanol = 0.33 mol 46.07 g/mol = 15.34 g ethanol

Here the entire process has been carried out by three phases i.e cooling vapor to bp , then the phase of condensing vapor and the 3rd one is cooling of liquid. We have to calculate the heat required for all the three phases and the total heat required can be calculated by the addition of all the three processes.

(1) Cooling vapor to boiling point

The heat required can be calculated as,

q1 = Cm Where C is the heat capacity (for ethanol = 1.43 J/goC)

m is the mass is the change in temperature

q1 =  1.43 J/goC 15.34 g [78.5...

Step 2 of 3

Step 3 of 3

##### ISBN: 9780073511085

This full solution covers the following key subjects: atm, ethanol, calculate, convert, data. This expansive textbook survival guide covers 23 chapters, and 1878 solutions. Principles of General Chemistry was written by and is associated to the ISBN: 9780073511085. The answer to “From the data below, calculate the total heat (in J) needed to convert 0.333 mol of gaseous ethanol at 300°C and 1 atm to liquid ethanol at 25.0°C and 1 atm:” is broken down into a number of easy to follow steps, and 31 words. Since the solution to 16P from 12 chapter was answered, more than 229 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Principles of General Chemistry, edition: 2. The full step-by-step solution to problem: 16P from chapter: 12 was answered by , our top Chemistry solution expert on 08/31/17, 03:54AM.

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