2C₂H₂O(g) + 50₂(g) → 4CO₂(g) + 4H₂0 (g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in the second experiment. Calculate the reaction enthalpy AH per mole of CO₂. O exothermic O endothermic O neither kJ 0- mol 0 X
2C₂H₂O(g) + 50₂(g) → 4CO₂(g) + 4H₂0 (g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in the second experiment. Calculate the reaction enthalpy AH per mole of CO₂. O exothermic O endothermic O neither kJ 0- mol 0 X
Chemistry for Engineering Students
3rd Edition
ISBN:9781285199023
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.79PAE: A student performing a calorimetry experiment combined 100.0 ml. of 0.50 M HCI and 100.0 ml. of 0.50...
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Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
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A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
Question
7.2 heat of reaction from bomb
Aleks takes significant figures very seriously. Thanks
Transcribed Image Text:y
=
OTHERMOCHEMISTRY
Calculating heat of reaction from bomb calorimetry data
A student runs two experiments with a constant-volume "bomb" calorimeter containing 1200. g of water (see sketch at
right).
First, a 7.500 g tablet of benzoic acid (CH₂CO₂H) is put into the "bomb" and burned completely in an excess of
oxygen. (Benzoic acid is known to have a heat of combustion of 26.454 kJ/g.) The temperature of the water is observed
to rise from 20.00 °C to 55.18 °C over a time of 9.8 minutes.
Next, 5.430 g of acetaldehyde (C₂H₂0) are put into the "bomb" and similarly completely burned in an excess of
oxygen. This time the temperature of the water rises from 20.00 °C to 43.66 °C.
Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below
about this reaction:
Is this reaction exothermic, endothermic, or neither?
TE vou caid the reaction war ovothermic or ondothermic calculate the amount of hoat that was
Explanation
Check
‒‒
Q Search
2C₂H₂O(g) + 50₂(g) → 4CO₂(g) + 4H₂O (g)
Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits.
Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match
published values for this reaction.
O exothermic
O endothermic
O neither
7.-
stirrer
✔
chemical reaction
"bomb"
A "bomb" calorimeter.
n
thermometer
0
1/5
x10
X
water
Ś
insulation
Andrew
?
圖点医
do
Ar
Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility
Transcribed Image Text:=
OTHERMOCHEMISTRY
Calculating heat of reaction from bomb calorimetry data
time the temperature of the water rises from 20.00 °C to 43.66 °C.
Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below
about this reaction:
oxygen
Is this reaction exothermic, endothermic, or neither?
If you said the reaction was exothermic or endothermic, calculate the amount of heat that was
released or absorbed by the reaction in the second experiment.
2C₂H₂O(g) + 50₂(g) → 4CO₂(g) + 4H₂O (g)
Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits.
Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match
published values for this reaction.
Calculate the reaction enthalpy AHxn per mole of CO₂.
ΔΗ
Explanation
Check
Q Search
LDE
O exothermic
O endothermic
O neither
KJ
0-
kJ
C
mol
chemical reaction
"bomb"
A "bomb" calorimeter.
19
1/5
X
5
Andrew V
?
Co
a
© 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility
alo
Ar
n
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