Chemistry

0.100 mol of SO2 and 0.100 mol of O2 are introduced in a flask of 1.52 L. When in equilibrium, 203 is found to be 0.0916 mol. Determine kp.

2S03(g) <-> 2SO(g) + O2(g)

In order to solve this question 1st I made an ICE table and I got the values

2SO3 <-> 2SO + 02
I .100 .100
C .1- 0.0916 .1-.0458
E 0.0916 .0084 .0542

.0916/1.52 .0084/1.52 .0542/1.52
=.060M =.0055M =.0357M

Then I substitued each value into the kp expression and solved for the Kp. Is this correct?

  1. 👍 0
  2. 👎 0
  3. 👁 83
asked by K
  1. Sorry my ICE table came out wrong.

    It is actually suppose to be

    2SO3 <-> 2SO + 02
    I 0 .100 .100
    C 0 .1- 0.0916 .1-.0458
    E 0.0916 .0084 .0542

    1. 👍 0
    2. 👎 0
    posted by K
  2. The boards don't recognize any space AFTER the first one but you can still space if you use periods; for example, as in
    ..........2SO3 ==> 2SO2 + O2.
    initial....0.........0.1....0.1
    change....+2x........-2x...-x
    equil.....+2x........0.1-2x.0.1-x

    The equilibrium values look ok to me for SO3 and O2. For SO2, I think you have thrown away the last number which I wouldn't do. 0.1-0.0916 = 0.00840. (OK, so it's a zero but you shouldn't throw it away.)
    To that point you are ok. What you have calculated, and called Kp, actually is Kc. moles/L = M and you substituted into the Kc expression and solved for Kc.

    What you need to do next is to add all of the moles to find total moles, then find the mole fraction of each gas.
    XSO3 = moles SO3/total moles = ??
    XSO2 = moles SO2/total moles = ??
    XO2 = moles O2/total moles = ??
    Next you want the partial pressure of each. That is
    PSO3 = XSO3*Ptotal
    PSO2 = XSO2*Ptotal
    PO2 = XO2*Ptotal.
    Do you have a value for Ptotal in the problem, an equilibrium pressure given, or a temperature given in the problem/

    1. 👍 0
    2. 👎 0
  3. No I wasn't, but can I just use the pressure formula of P() = nRT/V and then just add all of them together?

    1. 👍 0
    2. 👎 0
    posted by K
  4. Okay I think I figured out how to do it all. Thanks for explaining.

    1. 👍 0
    2. 👎 0
    posted by K
  5. You don't have a T; what will you substitute for T in P = nRT/V. If you have a total P you can calculate partial pressures of each then solve for Kp.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    (You may have seen this before) A crude oil burned in electrical generating plants contains about 1.2% sulfur by mass. When the oil burns, the sulfur forms sulfur dioxide gas: S(s) + O2(g) -------> SO2(g) How many liters of SO2 (d

    asked by starlight on October 11, 2008
  2. Chemistry

    Given the following equation: SO2 + NO2 SO3 + NO At 25 Celcius, 2.00 mol of each of SO2 and NO2 are introduced into a 1.0L sealed flask. When euilibrium is reached, it is found that [NO2] = 1.30 mol/L [SO3] = 1.30 mol/L --

    asked by Lily on November 8, 2006
  3. chemistry

    in a lab experiment to obtain the molar mass of a voltaile liquid, the following data is obtained: volume of flask=225ml mass of flask=77.834gms mass of flask+gas=78.416gms temperature=100 degrees celsius pressure=714 torr What is

    asked by timmy on August 5, 2010
  4. Chemistry

    PLEASE fully explain these...I've already tried to figure them out and failed terribly... thanks so much 4. 5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation: At

    asked by Katie on May 17, 2012
  5. Chemistry

    At a particular temp, K = 1.6 x 10^-5 for the reaction: 2SO3(g) 2SO2(g) + O2 (g) If 4 mol of SO2 and 2 mol of O2 are placed into a 2.0L flask, calculate the equilibrium concentrations of all species. I set up an ICE table with SO3

    asked by Scott L. on May 23, 2010
  6. CHEMISTRY

    i need help with this pre lab question:| plse help me! teh following data were obained for the reaction 2ClO2(aq)+ 2OH^-(aq) -> ClO3^-(aq) + ClO2^-(aq) +H2O (l) Where rate = delta[ClO2]/ delta t (mol/L) (mol/L) (mol/L*s) [ClO2]0

    asked by ram i need major help please!!! on February 22, 2009
  7. Chemistry

    A 1.00 L flask containing the equilibrium mixture CO +Cl2 COCl2 was found to contain 0.400 mol of COCl2, 0.100 mol of CO, and 0.500 mol of Cl2. If 0.300 mol of CO is added at constant temperature, what will be the new

    asked by Divya on April 29, 2012
  8. Chemistry

    0.500 mol of SO2, 0.100 mol of O2 and 0.700 mol of SO3 re intorduced simutaneously into a 1.00 L vessel at 1000 K. For the equillibirum, 2SO2 (g) + O2(g) 2SO3(g), the value of Kc at 1000K is 280. Show mathemtically that the

    asked by Lena on July 19, 2009
  9. Chemistry

    Predict whether the following reactions will be exothermic or endothermic A) N2(g)+ 3H2(g) --> 2NH3(g) B) S(g) +O2(g) ---> SO2(g) C) 2H2O(g) ---->2H2(g) + O2(g) D) 2F(g) +F2(g) Bond H-H 432 kj/mol N-N(triple bond) 942 kj/mol O=O

    asked by Kristen on January 22, 2012
  10. Chemistry

    For each of the following combinations of solutions, determine the mass of barium sulfate, BaSO4, that should precipitate...? For each of the following combinations of solutions, determine the mass of barium sulfate, BaSO4, that

    asked by Juliet on July 18, 2016

More Similar Questions