Penilaian Akhir Tahun
Kelas XI SMANU MH Thamrin
Kimia Cambridge
1. Some analytical techniques is used ini modern chemistry. The common techniques are HPLC and
NMR
What is the complete term of these abbreviations
a. Rf
b. GLC
c. HPLC
d. NMR
2. Chromatography is used as qualitative and quantitative analysis.
a. What is the definition of chromatography
b. Complete the table
Type
Paper Chromatography
TLC
Gas Chromatography
HPLC
Mobile Phase
Stationary Phase
3. Paper chromatography is used as qualitative analysis. Rf of sample is calculated and compared to
standard Rf. A sample which is water soluble is plotted in chtomatography, three spots appear
A. Calculate Rf of A (2 decimal places)
A
C
B
B. Some sample are colorless in the solution. Explain two ways to locate the spots
C. Arrange A, B and C from the least soluble in water, explain your answer
4. Gas Liquid Chromatogram is shown below
A. Give the correct labels for A, B and C.
B. What percentage of the mixture is Octane?
C. If the stationary is nonpolar, arrange the polarity of those compounds from the most to the least
and explain your answer
5. Mass Spectroscopy is used to determine Mr of molecule and predict simple molecule structure
The molecule consist on C, H, and halogen element only
A. What halogen is present, and how many halogen atom present?
Explain your answer
B. Predict the displayed formula of this molecule
6. Complete the table below
Molecule
Environment
Hydrogen
CH3COCH3
CH3CHOHCH3
CH3CO2CH2CH3
7. High resolution NMR is more advance than low resolution NMR
A. What is the advantage of using high resolution NMR
B. Methyl ethanoate CH3CO2CH3 is an ester
i.
How many low resolution H NMR peaks present in this molecule
ii.
What are the chemical shift of the peaks, answer in ppm (see table)
iii.
Draw the low resolution H NMR spectrum of methyl ethanoate
Carbon
H NMR Chemical Shift Data
C NMR Data