chem 203

Br2=2Br
When 1.05 mol of br2 is placed in a .950L flask, 1.20% of Br2 undergoes dissociation. Calculate the equilibrium constant Kc, for this reaction. Use ICE table.

  1. 👍 0
  2. 👎 0
  3. 👁 93
asked by ron
  1. Br2 ==> 2Br
    1.05 mol/0.950 L = ?? M

    Kc = (Br)^2/(Br2)

    Initial concns:
    (Br2) = ?? M
    (Br) = 0

    chenge in concn:
    (Br) = +2x Fill in after doing equilib.
    (Br2) = ??-x Fill after doing equilib.

    equilibrium concns:
    (Br) = 0.012*2*??
    (Br2) = ??*(1-0.012)

    Substitute into Kc expression above and solve for Kc.
    Since you have asked specifically for the ICE chart, you can complete that part of the chart after determining the concns at equilibrium. Check my thinking. Check my work. Post your work if you get stuck.

    1. 👍 0
    2. 👎 0
  2. That didn't help :(

    1. 👍 0
    2. 👎 0
    posted by Abby

Respond to this Question

First Name

Your Response

Similar Questions

  1. chem

    The reaction is Br2 (g) 2Br (g). It occurs at T = 1600 C. When 1.05 mol Br2 are placed in a 2 Liter flask, 2.50% of Br2 undergoes dissociation. Calculate the Kp for the reaction. Okay so i did the ICE table for this, Br2 (g) 2Br

    asked by Katie on October 14, 2013
  2. chemistry help

    For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants? 2Na(s)+Br2(g) ---->2NaBr(s) 1. 2mol Na, 2mol Br2 2. 1.8mol Na, 1.4mol Br2 3. 2.5mol Na, 1mol Br2 4. 12.6mol Na, 6.9 mol Br2

    asked by Kimmie on September 24, 2014
  3. chemistry

    Nitrosyl bromide decomposes according to the following equation. 2NOBr (g)(equilibrium arrow) 2NO (g) + Br2 (g) A sample of NOBr (0.64 mol) was placed in a 1.00-L flask containing no NO or Br2. At equilibrium the flask contained

    asked by jessie on November 19, 2010
  4. chem class

    Nitrosyl bromide decomposes according to the following equation. 2NOBr (g)(equilibrium arrow) 2NO (g) + Br2 (g) A sample of NOBr (0.64 mol) was placed in a 1.00-L flask containing no NO or Br2. At equilibrium the flask contained

    asked by jessie on November 18, 2010
  5. chemistry

    In a reaction involving the bromination of acetone, the following initial concentraions were present in the reaction mixture. acetone (0.8mol/L), H+ (0.2 mol/L), Br2 (0.004 mol/L) At 25 degrees C, it took 240s before the colour of

    asked by Mal on February 27, 2011
  6. chemistry

    If 890 mL of 0.236 M aqueous NaI and 0.560 mol of liquid Br2 are reacted stoichiometrically according to the balanced equation, how many moles of liquid Br2 remain? Round your answer to 3 significant figures. 2NaI(aq) + Br2(l)

    asked by Judy on June 2, 2010
  7. Chemistry

    If 0.670mol of liquid Br2 and 460mL of 1.72M aqueous NaI are reacted stoichiometrically according to the balanced equation, how many moles of liquid Br2 remain? Round answer to 3 sig figs. 2NaI(aq) + Br2(l) -> 2NaBr(aq) + I2(s)

    asked by Lisa on February 21, 2010
  8. chemistry

    A studen is asket to calculate the amount of heat involved in changing 10.0 g of liquid bomine at room temperature (22.5 C) to vapor at 59.0 C. To do this, one must know specific heat (0.474 J/g*C), boiling point (59 C), and heat

    asked by Lena on March 30, 2011
  9. Chemistry

    How many moles of Br2 are present in 500mL of vapor when Br2(l) and Br2(g) are in equilibrium at 33 degrees celcius? (Pvap Br2 at 33C = 299 mm Hg)

    asked by Jason on December 7, 2012
  10. chemistry:)

    The bond enthalpy of the Br–Cl bond is equal to DH° for the reaction BrCl(g)-> Br(g) + Cl(g). Use the following data to find the bond enthalpy of the Br–Cl bond. Br2(l)--->Br2(g) ÄH=30.91 KJ/mol Br2(g)--->2Br2(g) ÄH=192.9

    asked by April on June 6, 2012

More Similar Questions