A student calculated the standard enthalpy change of combustion of ethanol H c C 2 H 5 OH by calorimetry as 870 kJ mol 1 The data book value is 1367 kJ mol 1 Explain the difference between these values ...

There could be several reasons for the difference between the students value for the standard enthal ...

A student calculated the standard enthalpy change of combustion of ethanol H c [C 2 H

Question:

A student calculated the standard enthalpy change of combustion of ethanol ΔH^ϴ_c [C₂H₅OH] by calorimetry as –870 kJ mol^–1. The data book value is –1367 kJ mol^–1. Explain the difference between these values.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Cambridge International AS And A Level Chemistry Coursebook

ISBN: 9781316637739

2nd Edition

Authors: Lawrie Ryan, Roger Norris

See More Books

Question Posted: Sep 17, 2021 02:37 AM

See More Questions

The standard enthalpy change for the following reaction is 436.4 kJ/mol: H2(g) - H(g) + H(g) Calculate the standard enthalpy of formation of atomic hydrogen (H)?
The standard enthalpy change (H° for the thermal decomposition of silver nitrate according to the following equation is 178.67 kJ: The standard enthalpy of formation of AgNO3(s) is 2123.02...
Use thermodynamic data to calculate the standard enthalpy change for the decomposition of water vapor to atoms in the gas phase. From this, obtain a value for the OH bond energy. Similarly, obtain...
Using the trial balance prepared for Binbutti Engineering in Part 4 of Problem 2-9A, prepare an income statement and statement of changes in equity for the three months ended July 31, 2014, and a...
Define consumer behavior from both perspectives.
Alpha Ltd makes one standard article. You have been given the following information: 1. The inventor y sheets at the year-end show the following items: Raw materials: 100 tons of steel: Cost 140 per...
Consider a reflecting telescope described by the ray diagram in Figure 26.15A. If f M is the focal length of the mirror and f eyepiece is the focal length of the eyepiece, the total magnification of...
On July 1, 2015, Ashlock Chemical Company issued $4,000,000, 10%, 10 year bonds at $4,543,627. This price resulted in an 8% effective-interest rate on the bonds. Ashlock uses the effective-interest...
need help REALLY bad tonight finsihing up this last step Step 3a. CR dated uue March 19,2021. Adjusting Entries DR Joux. Insurance Expense Prepaid Insurance 300 3600/12mes xime 2 Rent Expense 460 uta...
1. What important career factors should Brad consider when evaluating his options? 2. What important personal factors should Brad consider when deciding among his career options? 3. What...
A student added 10 g (0.25 mol) of sodium hydroxide to 40 cm 3 of water to make a concentrated solution. All the sodium hydroxide dissolved. He measured the maximum temperature rise. He suggested...
a. Define standard enthalpy change of reaction. b. Given the enthalpy changes H 1 and H 2 below, construct a Hesss cycle that will enable you to find the enthalpy change, H r , for the reaction: MgCO...
The weather forecast says there is a 10% chance of rain on Thursday. Jim wakes up on Thursday and sees overcast skies. Since it has rained for the past three days, he believes that the chance of rain...
Problem 2.01 An ant is crawling along a straight wire, which we shall call the x axis, from A to B to C to D (which overlaps A), as shown in the figure below. O is the origin. Suppose you take...
In a separate C++ program, do the following: a) Create an unordered linked list by declaring a linked list of the unordered LinkedList type. You may assume that this list is to be comprised of...
TranscribedText: El. You are sitting at a table that has a solid round top {5.1"} kg] and a single solid cvlindrical leg {4. kg) [see figure, note that the tilt angle is exaggerated to he...
The municipal mill rate in the neighbourhood is 22.375 mills. There is an educational mill rate of 11.35 mills. The following list is the municipalities planned local improvement costs for the next...
Maggie Company had the following functional income statement for the month of May, 2020: MAGGIE COMPANY Functional Income Statement For the Month Ending May 31, 2020 Sales (30,000 units) $300,000...
1. If the law firm takes the lease, it will invest $950,000 and, in effect, borrow $9,050,000, repaid by 19 installments of $950,000. What is the interest rate on this disguised loan? 2. The law firm...
Describe a job you have had in the past or a job you are very familiar with. Indicate the negative aspects of the job and how it could be improved with current human resource management techniques.
Compare the following three isomeric dienes: (a) Which compound will liberate the least heat upon hydrogenation with 2 mol of hydrogen gas? Why? (b) Which compound will liberate the most heat upon...
Identify the most stable compound:
Draw an energy diagram showing the relative energy levels of the MOs for 1,3,5,7- octatetraene and identify the HOMO and LUMO for both the ground state and the excited state.
Due to the relationship of financial statements, the statement of stockholders' equity links the income statement to the balance sheet. True or False?
Troy Engines, Limited, manufactures a variety of engines for use in heavy equipment. The company has always produced all of the necessary parts for its engines, including all of the carburetors. An...
Trey is single and has no qualifying child. His adjusted gross income is $12,355. In order to claim the Earned Income Tax Credit, he must meet which of the following requirements? He cannot be the...

A student calculated the standard enthalpy change of combustion of ethanol H c [C 2 H

Question:

Step by Step Answer:

There could be several reasons for the difference between the students value for the standard enthal...View the full answer

Cambridge International AS And A Level Chemistry Coursebook

Students also viewed these Sciences questions