Chemistry

posted by .

Xe(g) + F2(g) ----uv light---> Xe F2(s)

XeF2(g) + 2F2(g) ---catalyst---> XeF6(s)

XeF6(s) + H2O(l) ------> Xe O3(s) + 6HF(g)

Looking at these three reactions respond the following:

a) For each 0.0250 grams of xenon hexaflouride that reacts, what mass of water is requiered?

b)If the three reactions occur in sequence, for each 0.250 grams of xenon that reacts, what is the theoretical yield of hydrogen flouride in grams?

c)If 0.123 moles of xenon flouride reacts with 0.333moles of water, what mass of hydrogen flouride forms?

  • Chemistry -

    a)
    Convert 0.0250 g XeF6 to moles. moles = grams/molar mass.
    Convert moles XeF6 to moles H2O.
    moles XeF6 x (1 mole H2O/1 mole XeF6) = mol XeF6 x 1 = ?
    Then convert moles H2O to grams. g = moles x molar mass.

    b)You CAN work three stoichiometry problems here; i.e., 0.250 g Xe and convert to g XeF2, then use that to convert to g XeF6, then again to convert XeF6 to HF. But you can cut out all of the middle work this way.
    Go through the reactions mole for mole like this.
    1 mole Xe = 1 mol XeF2 = 1 mol XeF6 = 6 mol HF; therefore, we know 1 mol Xe = 6 mol HF.
    mol Xe = 0.250/atomic mass Xe
    Convert mol Xe to mol HF like this.
    moles Xe x (6 mol HF/1 mol Xe) = mole Xe x (6/1) = ?
    Then convert moles HF to grams. g = mols x molar mass. That is the theoretical yield of HF in grams. You an see this is just another stoichiometry problem.

    c. This is a limiting reagent problem. I'll leave that for you. Post your work if you get stuck.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Xenon of mass 5.08 g reacts with fluorine to form 9.49 g of a xenon fluoride. What is the empirical formula of this compound?
  2. chemistry

    how many molecules of Xef6 are formed from 12.9L at 298K and 2.6atm according to the following reaction. assume excess is Xe
  3. Chemistry PLZ HELP!!!!!

    Predict what type of bonging predominates in each of the following. a. AsCl3 b. LiBr c. CuNi d. SO2 e. XeF6 f. Fe g. MnF2 h. HCN i. Al2O3 j. KCl k. O2 l. Cr
  4. CHEMESTRY

    One of the few xenon compounds that form is cesium xenon heptafluoride (CsXeF7). How many moles of CsXeF7 can be produced from the reaction of 13.0 mol cesium fluoride with 14.0 mol xenon hexafluoride?
  5. CHEMESTRY

    One of the few xenon compounds that form is cesium xenon heptafluoride (CsXeF7). How many moles of CsXeF7 can be produced from the reaction of 13.0 mol cesium fluoride with 14.0 mol xenon hexafluoride?
  6. Chemistry

    Another proposed mechanism problem: H2O2 + I ---> H2O +IO slow H2O2 + IO ---> H2O + O2 + I fast Which of the following statements in incorrect?
  7. Chemistry

    Calculate the number of grams of xenon in 3.566 g of the compound xenon tetrafluoride.
  8. Chemistry

    Calculate the number of grams of xenon in 3.566 g of the compound xenon tetrafluoride.
  9. Chemistry

    Using the balanced equation below, how many grams of cesium fluoride would be required to make 73.1 g of cesium xenon heptafluoride?
  10. Chemistry

    Need help with my last question! Given the following reaction: 2NH3 (g) + 5F2 (g) ---> N2F4 (g) + 6HF (g) If 4.00 g of NH3 and 14.0 g of F2 are allowed to react, how many grams of HF can be produced?

More Similar Questions