Calorimetry is a method used to measure enthalpy, or heat, changes that occur duringchemical processes. Two common calorimeters are constant-pressure calorimetersand constant-volume (or "bomb") calorimeters. Bomb calorimeters are used tomeasure combustion and other gas-producing reactions, where the reaction isobserved in a strong, sealed vessel. A simple constant-pressure calorimeter can bemade from a foam coffee cup and a thermometer; energy changes in a reaction areobserved via a temperature change of the solution in the cup. The idea behindcalorimeters is that if they are sufficiently insulated from the outside environment, anyenergy gained or lost in the chemical reaction will be directly observable as atemperature change in the calorimeter.Part AA total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 101 g of solution. The reaction caused the temperature of the solution to rise from 21.0 to24.7 °C. What is the molar reaction enthalpy? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.Use data from the "Formula Sheets" or the "Tables" posted on Canvas (see "Module 0: Important Files") for any additional information.Enter your answer with three significant figures in the given unit. The margin of error is 2%.▸ View Available Hint(s)ΔΗ =1—| ΑΣΦ|→C (3?kJ/mol

Given that:The number of moles of the compound = 2 molThe mass of the solution = 101 gInitial…

Part A A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 101 g of solution. The reaction caused the temperature of the solution to rise from 21.0 24.7°C. What is the molar reaction enthalpy? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water Use data from the "Formula Sheets" or the "Tables posted on Canvas (see "Module 0: Important Files") for any additional information. Enter your answer with three significant figures in the given unit. The margin of error is 2%. ▸ View Available Hint(s) ΕΠΙ ΑΣΦ ?

Part A A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 101 g of solution. The reaction caused the temperature of the solution to rise from 21.0 24.7°C. What is the molar reaction enthalpy? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water Use data from the "Formula Sheets" or the "Tables posted on Canvas (see "Module 0: Important Files") for any additional information. Enter your answer with three significant figures in the given unit. The margin of error is 2%. ▸ View Available Hint(s) ΕΠΙ ΑΣΦ ?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

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Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.

Question

Calorimetry is a method used to measure enthalpy, or heat, changes that occur during
chemical processes. Two common calorimeters are constant-pressure calorimeters
and constant-volume (or "bomb") calorimeters. Bomb calorimeters are used to
measure combustion and other gas-producing reactions, where the reaction is
observed in a strong, sealed vessel. A simple constant-pressure calorimeter can be
made from a foam coffee cup and a thermometer; energy changes in a reaction are
observed via a temperature change of the solution in the cup. The idea behind
calorimeters is that if they are sufficiently insulated from the outside environment, any
energy gained or lost in the chemical reaction will be directly observable as a
temperature change in the calorimeter.
Part A
A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 101 g of solution. The reaction caused the temperature of the solution to rise from 21.0 to
24.7 °C. What is the molar reaction enthalpy? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
Use data from the "Formula Sheets" or the "Tables" posted on Canvas (see "Module 0: Important Files") for any additional information.
Enter your answer with three significant figures in the given unit. The margin of error is 2%.
▸ View Available Hint(s)
ΔΗ =
1—| ΑΣΦ
|
→
C (3
?
kJ/mol

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