Chemistry...part 2

posted by .

Regarding the question I posted earlier (How many mL of an impure liquid CS2 mixture (density 1.26 gmL-1) which contains 93.0% of CS2 by mass, must be burned to obtain 12.8g SO2?)>>volume is 6.49 mL

what volume of pure oxygen at 25.0 degrees C and 100 kPa would be consumed (assume the carbon content burns to CO2).

Thanks!

  • Chemistry...part 2 -

    Use PV = nRT
    Remember T is Kelvin.
    Use the mass CS2 and convert to moles for n. There are 101.325 kPa in 1 atm.

  • Chemistry...part 2 -

    I can't seem to get the answer (7.43)

    PV=nRT
    100V= 0.107334995 (8.314) (298.15)

    V= 2.66

    Any ideas?

  • Chemistry...part 2 -

    Rule #1 before we talk about where you went wrong. Don't copy all those digits on the calculator. Use 0.1073 if you wish but no more.
    Now for the problem.
    How did you get the 0.1073 moles.
    I would have started with the 12.8 g SO2 which is 12.8/64 = 0.200 moles SO2. Now convert that to moles O2 (which you didn't do) using the coefficients in the balanced equation.
    0.200 moles SO2 x (3 moles O2/2 moles SO2) = 0.300. Now plug that in. I get 7.436 liters which rounds to 7.44 L. I get 7.43 if I use 298 instead of 298.15 for T and 298.15 isn't justified.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    A certain mine produces 2.5 108 kg of copper from chalcopyrite (CuFeS2) each year. The ore contains only 0.80% Cu by mass. (a) If the density of the ore is 2.0 g/cm3, calculate the volume of ore removed each year. (b) Calculate the …
  2. chemistry

    Identify the limiting reagent and the volume of product formed with 11L CS2 reacts with 18L O2 to prduce CO2 gas and SO2 gas. CS2+3O2-->CO2+2SO2
  3. Chemistry

    How many mL of an impure liquid CS2 mixture (density 1.26 gmL-1) which contains 93.0% of CS2 by mass, must be burned to obtain 12.8g SO2?
  4. Chemistry

    CS2(g) + O2(g) CO2(g) + SO2(g) (a) Consider the unbalanced equation above. What is the maximum mass of SO2 that can be produced when 46.0 g of CS2 and 29.0 g O2 react?
  5. chemistry

    When CS2(g) (545.0 grams) and 57.71 grams of H2(g) in a 200.0 L reaction vessel at 961.0 K are allowed to come to equilibrium the mixture contains 2.447 mol of CH4(g). What concentration (mol/L) of CS2(g) reacted?
  6. Chemistry

    If 45.3 mL of liquid CS2 and 7.62 L of gaseous O2 measured at STP are reacted stoichiometrically according to the balanced equation, how many milliliters of liquid CS2 remain?
  7. chemistry

    If 8.29 L of gaseous Cl2 measured at STP and 0.380 mol of liquid CS2 are reacted stoichiometrically according to the balanced equation, how many moles of liquid CS2 remain?
  8. chemistry due soon

    Which reaction shows that the enthalpy of formation of CS2 is Hf = 89.4 kJ/mol?
  9. Kainantu sec..science(chemistry)

    At stp what volume of SO2 gas will be produced when 2.00g of CS2 is burned
  10. Chemistry

    I posted this before and I know now to use P1T2=P2T1 but I was wondering what I would plug in as pressure and temp?

More Similar Questions