Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 31, Problem 31.6QAP
Interpretation Introduction
Interpretation:
The cause of the immersion of thermocouple inside the sample directly is to be evaluated.
Concept introduction:
Determination properties of materials are done on the basis of change of temperature and it is known as thermal analysis. Many methods are there as example DAE or DTA etc.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
6. A volatilization gravimetry experiment was conducted on an unknown organic liquid
(presumed to only contain carbon, hydrogen, and oxygen). The liquid was massed (data in
the first column below) and then combusted in an excess of oxygen. The exhaust gas was
passed through a trap containing drierite and then through a trap containing ascarite. The
starting and ending masses of the drierite and ascarite were used to obtain the data in the
second two columns below.
Mass Unknown
12.4370
12.5590
12.2230
Mass CO2
17.0822
17.2497
16.7882
Mass H₂O
13.9849
14.1221
13.7443
A.) Calculate the mass percent of carbon, hydrogen, and oxygen in the unknown liquid. There
are no outliers, so you can average the data before processing, if you wish.
B.) Calculate the empirical formula of the unknown compound.
M HW 2.5 - Blackboard X
Mind Tap - Cengage Learning X Bb My Blackboard Content - Black x +
5112480241329813180832311&elSBN=9781305862883&id=1774598910&snapshotid=33...
References
Submit Answer
Use the References to access important values if needed for this question.
A student determines the heat of dissolution of solid cesium sulfate using a coffee-cup
calorimeter of negligible heat capacity.
When 16.2 g of Cs₂SO4(s) is dissolved in 101.00 g of water, the temperature of the solution drops
from 25.00 to 23.12 °C. Based on the student's observation, calculate the enthalpy of dissolution
of Cs₂SO4(s) in kJ/mol. Assume the specific heat of the solution is 4.184 J/g°C.
AH dissolution=
kJ/mol
ant P Calorimetry - Heat of Solution (Calorimete...: This is group attempt 1 of 10
Autosaved at 9:03 PM
[
Q Search
What weight of mercury bichloride should be taken as sample, assuming 100% purity, so that 0.5 g og HgS will be obtained in a gravimetric analysis? Gravimetric factor = 1.1669
Chapter 31 Solutions
Principles of Instrumental Analysis
Knowledge Booster
Similar questions
- Mark the correct answer 5. The generation of heat by chemical reaction is due to a) heat input that increases the internal energy of the reactants b) the change of phases from solids to liquids or gases during the reaction. c) the enthalpy change of the system d) the high thermal conductivity of the reagents 6. The material balance for a substance in a system The generation-consumption term a) It is considered when the reaction is homogeneous and takes place within the system b) appears when the chemical reaction is heterogeneous c) is practically zero since reaction rates are always slow d) is always zero, because matter cannot be created or destroyedarrow_forward(a) Powder metallurgy (PM) is a net-shape forming process by which fine powdered materials are blended, pressed into the desired shape (compacted), and then heated (sintered) in a controlled atmosphere to bond the contacting surfaces of the particles and establish desired properties. i) Justify the reasons why powder-metal parts are commonly used for machine elements which requiring good tribological characteristics. ii) Compaction is the step in which high pressure is applied to the powders to form them into the desired shapes. The purposes of compaction are to obtain the required shape, density, and particle-to-particle contact. In your opinion, is there any density variation in the compacting of powders? Justify your answer. If your answer is yes, propose appropriate methods to reduce the variation.arrow_forwardDifference between unit process and unit operationsarrow_forward
- Sample Number of Fe content mg/L measurements on the sample 3 1.56, 1.45, 1.51 1.42, 1.39, 1.46 1.52, 1.29, 1.41 3 3 3. When analyzing the iron content of a well water drilled for use in a new housing development, water from the well was analyzed on three different days. The following data was obtained: Based on the data in the picture, the coefficient of variation (CV) for data of set number 1(row 1) is: 1. 03.66 2. 00.79 3. 02.014 4. 00.0366 5. 06.54arrow_forwardA homogeneous mixture has O not a uniform composition throughout more than one phase on a uniform composition throughout non-uniformly distributed particlesarrow_forwardA 1.59 g sample containing KI was analyzed gravimetrically and 0.0538g of Barium Iodate was recovered... express the results of this analysis as percent posassium iodide.arrow_forward
- Volatile and semi-volatile compounds can be analyzed by GCarrow_forwardMind Tap Cengage Learning X Bb My Blackboard Content - Black x 35112480241329813180832311&elSBN=9781305862883&id=1774598910&snapshotld-33... MLM HW 2.5- Blackboard X ck References Use the References to access important values if needed for this question. A student determines the heat of dissolution of solid cobalt(II) sulfate using a coffee-cup calorimeter of negligible heat capacity. Submit Answer When 1.39 g of COSO4(s) is dissolved in 109.00 g of water, the temperature of the solution increases from 25.00 to 26.62 °C. Based on the student's observation, calculate the enthalpy of dissolution of CoSO4(s) in kJ/mol. Assume the specific heat of the solution is 4.184 J/g°C. MacBook Air AH dissolution= nstant P Calorimetry - Heat of Solution (Calorimete...: This is group attempt 1 of 10 kJ/mol Autosaved at 9:03 PM + Q Searcarrow_forwardThe following errors in procedure will affect the experimental result. Explain how wach action causes an incorrect result. 1) Student A was in a hurry and stopped heating, even though bubbles were still emerging from the rubber tubing. 2) Student B used the measurement of Flask no. 1 to be 250mL, without measuring the volume directed. 3) Student C recorded the temperature in degrees Celcius and used these values in calculations. 4) Water remained on the outside of the flask and on the foil when the final mass was determined.arrow_forward
- 53. + 2NH2 heatlpressuearrow_forward1%PP . lin. A (2 m)-long steel wire in a musical instrument has a radius of (0.3 mm). When the wire is under a tension of (90 N), how ?much does its length change consider Young's modulus equals to (20 · 101º N/m² ) 0.318 cm 3.33 cm 1.38 cm 3.18 cm A future rectangular ship (tanker) filled with oil. If the dimensions of the ship are (250 m) long, (80 m) wide, and (80 m) high. Determine how far the bottom of the ship is ?below sea level consider the total mass of the ship with the oil (10.2 · 10° kg) and the sea density (p = 1024 kg/m³ ) . 49.8 m O 56.3 m 29.6 m 34.7 m O IIarrow_forwardViscometer is used to measure the viscosity of a series of dilute solutions of a polymer in toluene at 30°C. (1) Intrinsic viscosity is the most useful of the various viscosity designations because it can be related to molecular weight by the Mark-Houwink-Sakurada equation, [n] = KM. Calculate the viscosity average molecular weight for this polymer by using the data given in Table 2. Given that the Mark-Houwink constant, K is 12 x 10-5 dl/g and a = 0.71. 0.505 0.595 0.804 Concentration 0 (g/dL) Flow time (s) 67.94 0.402 107.70 121.05 Table 2 132.77 161.39 1.207 227.84arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
ChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill Education
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill Education
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY