A 72.0 mL sample of 1.00 M NAOH is mixed with 59.0 mL of 1.00 M H,SO, in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 20.4 °C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until the reaction is complete. Assume that: • the density of the mixed solutions is 1.00 g/mL • the final volume is the sum of the two initial volumes • the specific heat of the mixed solutions is 4.184 J/(g °C) • no heat is lost to the surroundings Given: The AHrxn for the neutralization of NaOH with H2SO4 is -114 kJ/mol H2SO4laq) + 2 NAOH(aq) → NazSO4laq) + 2 H20(1) What is the maximum measured temperature (in °C) in the Styrofoam cup after the reaction is complete? Hint: Remember to consider the stoichiometry of the reaction. Enter the numerical value (no units) to 1 decimal place (Helpful tip: This question may take a bit longer to answer)

A 72.0 mL sample of 1.00 M NAOH is mixed with 59.0 mL of 1.00 M H,SO, in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 20.4 °C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until the reaction is complete. Assume that: • the density of the mixed solutions is 1.00 g/mL • the final volume is the sum of the two initial volumes • the specific heat of the mixed solutions is 4.184 J/(g °C) • no heat is lost to the surroundings Given: The AHrxn for the neutralization of NaOH with H2SO4 is -114 kJ/mol H2SO4laq) + 2 NAOH(aq) → NazSO4laq) + 2 H20(1) What is the maximum measured temperature (in °C) in the Styrofoam cup after the reaction is complete? Hint: Remember to consider the stoichiometry of the reaction. Enter the numerical value (no units) to 1 decimal place (Helpful tip: This question may take a bit longer to answer)

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

Thermochemistry

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

A 72.0 mL sample of 1.00 M NaOH is mixed with 59.0 mL of 1.00 M H,SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated
thermometer. The temperature of each solution before mixing is 20.4 °C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until the reaction
is complete. Assume that:
• the density of the mixed solutions is 1.00 g/mL
• the final volume is the sum of the two initial volumes
• the specific heat of the mixed solutions is 4.184 J/(g °C)
no heat is lost to the surroundings
Given: The AHxn for the neutralization of NAOH with H2SO4 is -114 kJ/mol
H2SO4laq) + 2 NaOH(aq) Na2S04laq) + 2 H20(1)
What is the maximum measured temperature (in °C) in the Styrofoam cup after the reaction is complete?
Hint: Remember to consider the stoichiometry of the reaction.
Enter the numerical value (no units) to 1 decimal place
(Helpful tip: This question may take a bit longer to answer)
Type your answer...

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