1. Determination of heat capacity of calorimeter: 50.0 mL. H20 at the initial temperature of 23.5 °C is added to a calorimeter (coffee cup) and stirred and kept for 5 minutes. Then 50.0 mL. of hot water at the temperature of 98.0 °C is added to the calorimeter contained the 50.0 mL. H2O at 23.5 °c. The temperature of the mixture is recorded every 30 second, the following data is obtained:
1. Determination of heat capacity of calorimeter: 50.0 mL. H20 at the initial temperature of 23.5 °C is added to a calorimeter (coffee cup) and stirred and kept for 5 minutes. Then 50.0 mL. of hot water at the temperature of 98.0 °C is added to the calorimeter contained the 50.0 mL. H2O at 23.5 °c. The temperature of the mixture is recorded every 30 second, the following data is obtained:
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
Related questions
Question
![Hint: This is the diluted : heat capacity = 3.184 J/g °C and D = 1.00 g/ mole
Heat of reaction = - (heat of solution) - heat of calorimetry
c. Calculate the heat of reaction for the following chemical reaction:
NaOH (s) + HCI(aq) ---
-→ NaCl(aq) + H2O(I)
Using the following reactions:
NaOH(s) ----
-→ NAOH(aq).
AH = -102 kj / mole
NaOH(aq) + HCl(aq) -
calculations.
-→ NaCl(aq) + H2O(). use the heat of reaction from your](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb2fa90c-1147-4575-bb50-301a6f95fb8e%2F0e51b041-99e7-4405-a009-88d78250d630%2F4bl97j_processed.png&w=3840&q=75)
Transcribed Image Text:Hint: This is the diluted : heat capacity = 3.184 J/g °C and D = 1.00 g/ mole
Heat of reaction = - (heat of solution) - heat of calorimetry
c. Calculate the heat of reaction for the following chemical reaction:
NaOH (s) + HCI(aq) ---
-→ NaCl(aq) + H2O(I)
Using the following reactions:
NaOH(s) ----
-→ NAOH(aq).
AH = -102 kj / mole
NaOH(aq) + HCl(aq) -
calculations.
-→ NaCl(aq) + H2O(). use the heat of reaction from your
![1. Determination of heat capacity of calorimeter:
50.0 mL. H20 at the initial temperature of 23.5 °C is added to a calorimeter (coffee cup) and
stirred and kept for 5 minutes. Then 50.0 mL. of hot water at the temperature of 98.0 °C is
added to the calorimeter contained the 50.0 mL. H2O at 23.5 °C. The temperature of the
mixture is recorded every 30 second, the following data is obtained:
Time in second
Temperature in °C
30
55.0
60
50.0
90
45.5
120
42.0
150
38.0
180
37.5
210
37.5
240
37.0
270
37.0
300
37.0
330
37.0
D of H2O = 1.00 g/ mL.
Heat capacity of H20 (1) = 4.184 J/ g °C
a. Plot temperature vs. time to get the final temperature.
b. Calculate the heat capacity of the calorimeter.
Hint: the heat lost by hot water = heat gained by cold water + heat gained by calorimeter
2. Determination heat of reaction.
50.0 mL. of 0.100 M NAOH(aq) at the temperature of 22.0 °C is added to a calorimeter
(coffee cup). Then 50.0 mL. of HCl(aq) at the temperature of 21.0 °C is added to the
calorimeter containing NaOH(aq). The temperature is measured every 30 seconds , the
following data is obtained:
Time in second
Temperature in °C
25.0
30
60
26.5
90
28.0
120
29.5
150
29.0
180
29.5
210
29.5
a. Plot temperature vs. time to get the final temperature.
b. Calculate the heat of reaction in kJ/ mole](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb2fa90c-1147-4575-bb50-301a6f95fb8e%2F0e51b041-99e7-4405-a009-88d78250d630%2F16ixbr_processed.png&w=3840&q=75)
Transcribed Image Text:1. Determination of heat capacity of calorimeter:
50.0 mL. H20 at the initial temperature of 23.5 °C is added to a calorimeter (coffee cup) and
stirred and kept for 5 minutes. Then 50.0 mL. of hot water at the temperature of 98.0 °C is
added to the calorimeter contained the 50.0 mL. H2O at 23.5 °C. The temperature of the
mixture is recorded every 30 second, the following data is obtained:
Time in second
Temperature in °C
30
55.0
60
50.0
90
45.5
120
42.0
150
38.0
180
37.5
210
37.5
240
37.0
270
37.0
300
37.0
330
37.0
D of H2O = 1.00 g/ mL.
Heat capacity of H20 (1) = 4.184 J/ g °C
a. Plot temperature vs. time to get the final temperature.
b. Calculate the heat capacity of the calorimeter.
Hint: the heat lost by hot water = heat gained by cold water + heat gained by calorimeter
2. Determination heat of reaction.
50.0 mL. of 0.100 M NAOH(aq) at the temperature of 22.0 °C is added to a calorimeter
(coffee cup). Then 50.0 mL. of HCl(aq) at the temperature of 21.0 °C is added to the
calorimeter containing NaOH(aq). The temperature is measured every 30 seconds , the
following data is obtained:
Time in second
Temperature in °C
25.0
30
60
26.5
90
28.0
120
29.5
150
29.0
180
29.5
210
29.5
a. Plot temperature vs. time to get the final temperature.
b. Calculate the heat of reaction in kJ/ mole
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