Some of the butane, C 4 H 10 ( g ) , in a 200.0 L cylinder at 26.0°C is withdrawn and burned at a constant pressure in an excess of air. As a result, the pressure of the gas in the cylinder falls from 2.35 atm to 1.10 atm. The liberated heat is used to raise the temperature of 132.5 L of water in a heater from 26.0 to 62.2 °C. Assume that the combustion products are CO 2 (g) and H 2 O(I) exclusively, and determine the efficiency of the water heater. (That is, what percent of the heat of combustion was absorbed by the water?)
Some of the butane, C 4 H 10 ( g ) , in a 200.0 L cylinder at 26.0°C is withdrawn and burned at a constant pressure in an excess of air. As a result, the pressure of the gas in the cylinder falls from 2.35 atm to 1.10 atm. The liberated heat is used to raise the temperature of 132.5 L of water in a heater from 26.0 to 62.2 °C. Assume that the combustion products are CO 2 (g) and H 2 O(I) exclusively, and determine the efficiency of the water heater. (That is, what percent of the heat of combustion was absorbed by the water?)
Solution Summary: The author explains how the ideal gas equation is represented. The enthalpy of reaction can be calculated using the following relation.
Some of the butane,
C
4
H
10
(
g
)
, in a 200.0 L cylinder at 26.0°C is withdrawn and burned at a constant pressure in an excess of air. As a result, the pressure of the gas in the cylinder falls from 2.35 atm to 1.10 atm. The liberated heat is used to raise the temperature of 132.5 L of water in a heater from 26.0 to 62.2 °C. Assume that the combustion products are CO2(g) and H2O(I) exclusively, and determine the efficiency of the water heater. (That is, what percent of the heat of combustion was absorbed by the water?)
16. The proton NMR spectral information shown in this problem is for a compound with formula
CioH,N. Expansions are shown for the region from 8.7 to 7.0 ppm. The normal carbon-13 spec-
tral results, including DEPT-135 and DEPT-90 results, are tabulated:
7
J
Normal Carbon
DEPT-135
DEPT-90
19 ppm
Positive
No peak
122
Positive
Positive
cus
и
124
Positive
Positive
126
Positive
Positive
128
No peak
No peak
4°
129
Positive
Positive
130
Positive
Positive
(144
No peak
No peak
148
No peak
No peak
150
Positive
Positive
してし
3. Propose a synthesis for the following transformation. Do not draw an arrow-pushing
mechanism below, but make sure to draw the product of each proposed step (3 points).
+ En
CN
CN
Show work..don't give Ai generated solution...
Chapter 7 Solutions
Selected Solutions Manual For General Chemistry: Principles And Modern Applications
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Calorimetry Concept, Examples and Thermochemistry | How to Pass Chemistry; Author: Melissa Maribel;https://www.youtube.com/watch?v=nSh29lUGj00;License: Standard YouTube License, CC-BY