Given the following equilibrium system:
2SO2(g) + O2(g) ↔ 2SO3(g) +
If additional SO2(g) is added to the system while the temperature and pressure are kept constant. Compared to its original concentration, how will the concentration, of oxygen change?
Remain the Same
The pressure on the system is increased while the temperature is kept constant. Compared to its original concentration, how will the concentration of SO2(g) change?
Remain the Same
A catalyst is added to the above equilibrium system while the temperature and pressure are kept constant. Compared to its original concentration, how will the new equilibrium concentration of SO2(g) change?
Remain the Same
The temperature of the equilibrium system is decreased and the
pressure is kept constant. Compared to its orginal concentration,
how will the new equilibrium concentration of SO2(g)
Remain the Same
If the solution was not continuously stirred while performing the freezing point determination, what effect might that have on the experimental results? Briefly explain.
1. In the Deacon process for the manufacture of chlorine, HCl
and O2 react to form Cl2 and
H2O. Sufficient air (21 mole% O2, 79% N2) is fed to provide 35% excess oxygen, and the
fractional conversion of HCl is 85%.
(a) Calculate the mole fractions of the product stream components, using atomic species
balances in your calculations.
(b) Again calculate the mole fractions of the product stream components, only this time
use the extent of reaction in the calculations.
(c) An alternative to using air as the oxygen source would be to feed pure oxygen to
the reactor. Running with oxygen imposes a signi cant extra process cost relative to
running with air, but also offers the potential for considerable savings. Speculate on
what the cost and savings might be. What would determine which way the process
should be run?
4. Cr has four isotopes:
A) Determine how many protons, neutrons and electrons each isotope has.
B) The atomic mass reported for Cr is 54.94. What does this tell us about the relative abundance of each isotope? What isotope should be the most abundant?
C) Write the electronic configuration of the Cr, taking into account that studies show that it has a paramagnetism equivalent to 6 unpaired electrons. Determine the quantum numbers for the last electron 4s of Cr.
D) Determine the effective nuclear charges for the following Cr electrons:
---An electron 4s
---A 3d electron
Please try to write everything in an organized maner and legible handwritting.
The formation of tetrafluoroethylene from its elements is highly exothermic:
2F2(g) + 2C(s) ↔ F2C=CF2(g)
(a) If a mixture of F2, graphite, and C2F4 is at equilibrium in a closed container, will the reaction go to the right or to the left in F2 is added?
(b) Rare bacteria from the planet Teflon eats C2F4 and make Teflon for their cell walls. Will the reaction go to the right or to the left if these bacteria are added?
(c) Will the reaction go right or left if solid graphite is added? (Neglect any effect of increased pressure due to the decreased volume in the vessel when solid is added.)
(d) Will the reaction go right or left if the container is crushed to one-eight of its original volume?
(e) Does the equilibrium constant become larger or smaller if
the container is heated?
what is the maximum mass (in grams) of each of the following soluble salts that can be added to 160 mL of 0.050 M BaCl2 without causing precipitate to form? (assume the addition of solid causes no change in volume).
Determine the pH during the titration of 33.6 mL of 0.295 M methylamine (CH3NH2, Kb = 4.2×10-4) by 0.295 M HClO4 at the following points. (Assume the titration is done at 25 °C.) Note that state symbols are not shown for species in this problem.
(a) Before the addition of any HClO4
(b) After the addition of 12.4 mL of HClO4
(c) At the titration midpoint
(d) At the equivalence point
(e) After adding 49.1 mL of HClO4
Explain how polarity P' is related to retention of the sample analytes on the silica column for both the normal-phase and reverse-phase procedures.
Identify the number of core and valence electrons for each atom. Xe : core electrons Xe : valence electrons Be : core electrons Be : valence electrons Br : core electrons Br : valence elect.
Consider the reaction A -> 2 B. Initially 1.50mol A is present and no B. What are the amounts of A and B when the extent of reaction is 0.60mol?
Identify the Bronsted acid and base in each of the following equations: Please show all work on how you got the answer so I can understand.
HNO3 + H2O
Iron (III) oxide reacts with carbon monoxide to produce iron and carbon dioxide:
Fe2O3 (s) + 3CO(g) 2Fe (s) + 3 CO2 (g)
54.4 g of Fe2O3and 24.7 g of CO react to produce iron.
Molar mass of Fe2O3 = 159.69 g/mol. Molar mass of CO = 28.01 g/mol.
Determine the (a) limiting reactant, (b) theoretical yield, and (c) percent yield for the reaction if 29.1 g of iron are produced.
If a 0.100 M solution of NaOH is added to a solution containing 0.200 M Ni2+, 0.200 M Ce3+, and 0.200 M Cu2+, which metal hydroxides will precipitate first and last, respectively? Ksp for Ni(OH)2 is 6.0x10?16, for Ce (OH)3 is 6.0 x 10?22, and for Cu(OH)2 is 4.8x10?20.
A) Ni(OH)2 first, Cu(OH)2 last
B) Cu(OH)2 first, Ni(OH)2 last
C) Ni(OH)2 first, Ce(OH)3 last
D) Cu(OH)2 first, Ce(OH)3 last
E) Ce(OH)3 first, Cu(OH)2 last
Give detailed explanation
|Temp (Celsius)||Abs (325 nm)|
|M of urea||Abs (325 nm)|
Please help me Calculate fraction denatured and equilibrium constant at each temperature and plot ln K vs T-1 graph, once plotted Find ΔH, ΔS and ΔG(T=75) (mention any assumptions you made) and What is the Tm for each protein