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.
What are the advantages of receiving an overseas assignment?
A customer sued a pharmacist and the drug store that employed the pharmacist (Walgreens). The pharmacist reviewed the prescription records of a customer (during her shift at work), learned that the...
In Problem S1-3 the Landloc real estate development firm has hired an economist to assign a probability to each direction interest rates may take over the next five years. The economist has...
A 45-year-old man presents to the Emergency Department with a fever, widespread rash, and confusion. His only past history of note was Sydenham's chorea and a number of recent dental extractions....
Create a class HugeInteger which uses a 40-element array of digits to store integers as large as 40 digits each. Provide methods parse, toString, add and subtract. Method parse should receive a...
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...
Distinguishing among the sequential stages of global corporate citizenship.
Desi Company, a merchandising firm, reports the following data as of January 31 Cash $20,000 Accounts Receivable 40,000 Building 100,000 Inventories 45,000 Equipment 150,000 Long-term Investment...
How do evolutionary developmental biology (evo-devo) and molecular genetics shed light on the genetic mechanisms underlying the origin and diversification of species?
Mt. Brighton Ski Resort is looking at their response times foremergency calls at their resort. One variable of interest isthe time it takes to respond to a call for ski patrol help. Let Xbe the...
Nicolis Inc. sells a product for $57 per unit. The variable cost is $26 per unit, while fixed costs are $138,384. Determine (a) the break-even point in sales units and (b) the break-even point if the...
If Canadian Tire, in the Province of New Brunswich, accepts a $20 non-reimbursable coupon from a customer and the coupon is deducted from the customer purchase of $100 before HST/GST, the HST/GST...
Visit the IASB Web site at www.iasplus.com/country/useias.htm a. Name three governments that require companies to prepare their financial reports only in accordance with IFRS in order to list their...
Reconsider Prob. 1474. In order to drain the tank faster, a pump is installed near the tank exit as in Fig. P1475. Determine how much pump power input is necessary to establish an average water...
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.
What specific topic or area are you hoping to learn more about (money laundering)? How do you envision this course contributing to your professional goals?
Explain the IMF's involvement and lending framework during the process of sovereign debt restructurings.
A relatively new pharmacy retail company, namely FarmaBee, is currently experiencing significant growth in the sales of medicines. Its headquarter is situated in Jakarta whereas its two branches are...

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