Additional Day 1 Topics Flashcards
Consider the following reaction: C3H8 (g) + 5 O2 (g) = 3 CO2 (g) + 4 H2O (g) ∆H = -2202 kJ Which of the following applies to a forward reaction?
entropy – decreases, enthalpy – increases
What is the theory in two or three dimensional collision to be applied when playing billiards and in order to sink the target ball in the corner pocket?
Where two equal masses undergo a glancing elastic collision.
Consider three identical flasks filled with different gases at 273. 15 K Flask A: CO at 760 mmHg Flask B: N2 at 250 mmHg Flask C: H2 at 100 mmHg All of the following statements are incorrect except
Flask C will have the greatest average kinetic energy.
How many forms of nitrogen present in wastewater?
5
The rate of nucleophilic substitution reaction of tert-butyl bromide with OH– is found to be independent of the concentration of OH– at any instant. It can be inferred that the reaction is:
First-order (SN1)
Waxes are
Fatty acids alcohol esters
Which of the following is true about SN1 reactions of alkyl halides (RX)?
A two-step reaction mechanism (slow step and fast step) is involved.
Trimethyl-n-propylammonium is heated with KOH to yield N,N,N-trimethylamine and:
Propene
Reduction of ethyl cinnamate using LiAlH4 produces the alcohol:
3-phenylprop-2-en-1-ol
Styrene undergoes ozonolysis to yield two carbonyl compounds. Which of the following pairs is produced by this reaction?
Benzaldehyde and formaldehyde
In which reaction of alkyne can keto-enol tautomerism exist?
Ozonolysis
Which of the following compounds is not aromatic?
Tetrahydrofuran
Which of the following characteristic enzymes of gluconeogensis is not found in the cytosol?
Pyruvate carboxlyase
Chylomicrons are synthesized in
intestine
Palmitate has 16 carbon atoms with
2 double bonds
3 double bonds
One double bond
None of these
None of these
Who discovered vitamin C (ascorbic acid)?
Albert Szent-Gyorgyi
With an increase in pressure in gaseous phase chemical reactions, the fractional conversion __________ when the number of moles decreases.
increases
Vitamin K1 was first isolated from alfalalfa and has the phytyl side chain consisting of
four isoprene units
A ketogenic amino acid is one which degrades to keto-sugars
pyruvate or citric acid cycle intermediates
Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________ reaction.
series
In the normal breakdown of phenylalanine, it is initially degraded to
tyrosine
Which of the following amino acids can form hydrogen bonds with their side (R) groups?
Asparagine
Aspartic acid
Glutamine
All of these
All of these
In 1986, the nuclear reactor in Chernobyl had an accident and spewed radioactive nuclei that were carried by the winds for hundreds of miles. Today, among the child survivors of the event, the most common damage is thyroid cancer. Which radioactive nucleus do you expect to be responsible for these cancers?
I-131
Perchloroethylene, which is a liquid at room temperature, is one of the most widely used solvents for commercial dry cleaning. It is sold for this purpose under several trade names, including Perclene. Does this molecule have polar bonds? Is it a polar molecule? Does it have a dipole?
yes, non-polar, none
