A 2.50-g of sucrose (C2H22011) was burned with excess axygen in a calorimeter which contained 1.95 kg of water. The temperature of the calorimeter and contents increased from 18.22°C to 22.73°C The calorimeter had a water equivalent of 240 g Determine the heat of combustion of sucrose in kcal'mole. C12H22011(5) + 1202(g --> 12 CO2 (g) + 11 H20 (1) For the toolbar, oress Al T+F10 (PO or ALT-FN+F10 (Mar).

A 2.50-g of sucrose (C2H22011) was burned with excess axygen in a calorimeter which contained 1.95 kg of water. The temperature of the calorimeter and contents increased from 18.22°C to 22.73°C The calorimeter had a water equivalent of 240 g Determine the heat of combustion of sucrose in kcal'mole. C12H22011(5) + 1202(g --> 12 CO2 (g) + 11 H20 (1) For the toolbar, oress Al T+F10 (PO or ALT-FN+F10 (Mar).

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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Nitric acid, HNO3, reacts with potassium hydroxide as follows: HNO3(aq) + KOH(aq) ⟹ KNO3(aq) + H2O(l) A student places 55.0mL of 1.3M HNO3 in a coffee cup calorimeter, and noted that the temperature was 23.5oC. 55mL of 1.3M KOH also at 23.5oC was added. After quickly stirring with a thermometer, the temperature rose to 31.8oC. Calculate the heat generated by the reaction.
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The enthalpy of combustion and the standard enthalpy of formation of a fuel can be determined by measuring the temperature change in a calorimeter when a weighed amount of the fuel is burned in oxygen. (a) Write a balanced chemical equation for the combus- tion of isooctane, C3H18(€), to CO2(g) and H2O(€). Isooctane is a component of gasoline and is used as a reference standard in determining the “octane rating" of a fuel mixture. (b) Suppose 0.542 g isooctane is placed in a fixed-volume (bomb) calorimeter, which contains 750 g water, ini- tially at 20.450°C, surrounding the reaction compart- ment. The heat capacity of the calorimeter itself (excluding the water) has been measured to be 48 J K-1 in a separate calibration. After the combustion of the isooctane is complete, the water temperature is mea- sured to be 28.670°C. Taking the specific he: to be 4.184 J K-1g¬!, calculate AU for the combustion of 0.542 g isooctane. (c) Calculate AU for the combustion of 1 mol isooctane. (d)…
To study the possible amount of energy generated by a person, the person can be roughly viewed as a constant pressure calorimeter using table sugar (sucrose, C12H22O11) as the energy generator. The reaction of table sugar in a calorimeter is given by: C12H22O11(s) + 12O2(g) ----------> 12CO2(g) + 11H2O(g) a. What is the heat released by consuming one mole of sugar (C12H22O11) in this way? b. Calculate the enthalpy of combustion per mole of sugar utilization. c. Does the result of your calculation make sense?
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What is the molar energy of combustion (in kJ/mol) of C7HO2 when 2.50 g of C7H6O2 burns completely in excess O2 gas at constant pressure, temperature 298 K and releases -30.9 kJ of energy? 2 C7H6O2 + 15 02 - 14 CO2 + 6 H20 1.59 x 105 kJmol-1 1.59 x 10 kJmol-1 O 1.59 x 103 kJmol¯1 1590 kJmol-1
The balanced combustion reaction for C6H6C6H6 is 2C6H6(l)+15O2(g)⟶12CO2(g)+6H2O(l)+6542 kJ2C6H6(l)+15O2(g)⟶12CO2(g)+6H2O(l)+6542 kJ If 6.100 g C6H66.100 g C6H6 is burned and the heat produced from the burning is added to 5691 g5691 g of water at 21 ∘21 ∘C, what is the final temperature of the water?
NaHCO3 (aq) + CH3 COOH (aq) —> CO2 (g) + H2O (l) + CH3 COONa (aq) Calculates the amount of heat energy absorbed by the solution in the calorimeter or the amount of heat energy released by the reaction. Note: 100ml of CH3COOH, 2.5ml of NaHCO3, initial temp of 23c, final temp of 21c
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The balanced combustion reaction for C6H6C6H6 is 2C6H6(l)+15O2(g)⟶12CO2(g)+6H2O(l)+6542 kJ2C6H6(l)+15O2(g)⟶12CO2(g)+6H2O(l)+6542 kJ If 5.100 g C6H65.100 g C6H6 is burned and the heat produced from the burning is added to 5691 g5691 g of water at 21 ∘21 ∘C, what is the final temperature of the water?
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