There are several distinct differences between IR and UV-Vis
spectroscopy. Discuss the following as they relate to:
(a) The types of interactions responsible for the
signals generated
(b) Source of radiant energy
(c) Signal detection
(d) Sample cells
(e) Sample preparation
1.) How can you use IR spectroscopy to confirm that the
collected product is correct and pure?
2.) How can you use gas chromatography to confirm that the
collected product is pure?
1.) How can you use IR spectroscopy to confirm that the
collected product is correct and pure?
2.) How can you use gas chromatography to confirm that the
collected product is pure?
1)
Write a brief introduction on the theory behind IR spectroscopy
and gas chromatography. Explain what each instrumentation technique
is doing and how it works. Also address the
purpose of each part of the experiment.
1. Explain how each spectroscopy (IR, Mass spec, and NMR)
method works- what are you observing? What is happening to the
molecule that gives rise to useful information.
2. Explain how to read each: IR, NMR, mass spec.
3. Why are -OH and -NH signals in both proton NMR and the IR
region relatively broad in appearance? Explain how the appearance
of the -OH stretch would change in the IR spectrum of an alcohol
was take in the gas phase...
Question 1
Which of the following categories of compounds will affect the
pH of the aqueous solution they are dissolved in? This assumes they
are water soluble. Pick all that apply.
Multiple answers: You can select more than one option
A
alcohols
B
amine
C
aldehyde
D
carboxylic acids
Question 2
Which of the following categories of compounds will be soluble
in 5% NaOH (aq) if they are not soluble in water?
A
aldehydes
B
alcohols
C
amines
D
carboxylic...
Use the Joback method to estimate the Tc and Pc of each of the
following compounds:
A. Butane
B. 1- Hexanol
C. 2-chloropentance
D. 3-Hexane
E. 1,3 butadiene
question 1. Which of the following compounds are electrolytes
and which are not?
KNO3, H2O, NaHCO3, HBr,
NH3
the question 2. write the balanced chemical equation that show
the dissociation of the ions in aqueous solution for the
electrolytes you identify in question 1. Example: KCl (s) = K
+ (aq) + Cl - (aq)
question 3. Write balanced equations and balanced net ionic
equation for the precipitation reactions:
i) When AgNO3 react with Na2S
ii) When Pb(NO3)2 react with...
QUESTION 1. Which of the following compounds are electrolytes
and which are not?
KNO3, H2O, NaHCO3, HBr,
NH3
QUESTION 2. Write the balanced chemical equation that show the
dissociation of the ions in aqueous solution for the electrolytes
you identify in question 1. Example: KCl (s) = K + (aq) + Cl -
(aq)