Which reaction type is each chemical reaction, Precipitation, Acid-base, or Oxidation-reduction(redox)
1. CuSO4(aq)+Ba(ClO4)2(aq)-->BaSO4(s)+Cu(ClO4)2(aq)
2. 4Mn2++5BiO-3(aq)+2OH-(aq)-->H2O(I)+4MnO-4(aq)+5Bi+(aq)
3.NH4OH(aq)+HCl(aq)-->H2O(l)+NH4Cl(aq)
4. H2C2O4+2NaOH(aq)-->H2O(l)+Na2C2O4(aq)
5. MgCl2(aq)+Pb(NO3)2(aq)-->PbCl2(s)+Mg(NO3)2
6. 4Zn(s)+NO-3(aq)+7H2O(l)-->4Zn2+(aq)+NH+4(aq)+10OH-(aq)
7. Hg2(OOCCH3)2(aq)+SrI2(aq)-->Hg2I2(s)+Sr(OOCCH3)2(aq)
8.2HCl(aq)+K2S(aq)-->H2S(g)2KCl(aq)
9. 2H3PO4(aq)+3Ca(OH)2(aq)-->3H2O(l)+Ca3(PO4)2(aq)
10. 4Fe(s)+3O2(g)-->2Fe2O3(s)
In: Chemistry
|
CO (g) |
CO2 (g) |
H2O (g) |
H2O (l) |
|
‐137.1 |
‐394.01 |
‐228.4 |
‐274.4 |
Given the above standard free energies of formation at 25oC in kJ/mole,
(a) Find ΔGo and the equilibrium constant Kp for the reaction CO (g) + H2O (g)CO2 (g) + H2 (g) at 25oC
(b) Find the vapor pressure of H2O (g) at 25oC.
(c) If CO (g) , CO2 (g) and H2 (g) are mixed so that the partial pressure of each is 1.00 atm and the mixture is brought into contact with excess liquid H2O, what will be the partial pressure of each gas when equilibrium is attained at 25oC? The volume available to the gases is constant.
In: Chemistry
Kp = 6.5 × 104 at 308 K for the
following reaction:
2 NO (g) + Cl2(g) ⇌ 2
NOCl(g)
At equilibrium, PNO = 0.35 atm and
PCl2 = 0.10 atm
What is the equilibrium partial pressure of NOCl(g)?
In: Chemistry
Given the following equilibrium system:
2SO2(g) + O2(g) ↔ 2SO3(g) +
99.1 kJ
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?
Increase
Decrease
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?
Decrease
Increase
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
Increase
Decrease
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)
change?
Remain the Same
Increase
Decrease
In: Chemistry
If the solution was not continuously stirred while performing the freezing point determination, what effect might that have on the experimental results? Briefly explain.
In: Chemistry
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?
In: Chemistry
4. Cr has four isotopes:
Cr 50
Cr 52
Cr 53
Cr 54
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.
In: Chemistry
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?
In: Chemistry
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).
a. (NH4)2SO4
b. Pb(NO3)2
c. NaF
In: Chemistry
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
In: Chemistry
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.
In: Chemistry
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.
In: Chemistry
In: Chemistry
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?
In: Chemistry
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
In: Chemistry