Posted by T on Thursday, December 13, 2007 at 9:40pm.
What volume of O2 is required to react with excess CS2 to produce 4.0L of CO2 Assume all gases at STP.
Not sure what I am doing wrong, but the answer I am getting is not one of the answers.
4L/X mole=22.4 L/1 mole ===>.1786 mols
O2 + CS2 --> CO2 + S2
.1786 mols of each since it is a 1-1-1-1 equation.
Therefore, I am getting .1786 mols of O2 to make .1786 (4 L) CO2. .1786 mols O2 is 4 liters.
My answer options are
A) 12 L
B) 22.4 L
C) 1/3 x 22.4 L
D) 2 x 22.4 L
E) 3 x 22.4 L
What am I doing wrong here?
- Chemistry - Damon, Thursday, December 13, 2007 at 9:57pm
I have a hunch that what you wrote as S2 would be 2S if pure sulfur were indeed the result of such a reaction but I have a further hunch that SO2 or something would be a product.
For example (and my chemistry is terrible and I loaned someone my book):
3O2 + CS2 --> CO2 + 2SO2
in that case I would need 3*4 or 12 L
- Chemistry - DrBob222, Thursday, December 13, 2007 at 10:28pm
Just a note to clarify a couple of points.
#1. IF S were the product, and probably it is not, you would write it as S8. SO2 is the more likely product.
#2. I notice you went through mols. When all of the products are gases, you can use a short cut and not go through mols. The usual way of doing this is to say
4.0 L CO2 x (1 mol/22.4 L) = 0.1786 mols CO2.
mols O2 = 0.1786 mols CO2 x (3 mols O2/1 mol CO2) = 0.5357 mols O2.
volume O2 = 0.5357 x (22.4 L/1 mol) = 12 L
But here is the shortcut. Notice that we divided by 22.4 in step 1 and multiplied by 22.4 L in step 3. So all we need is step 2.
4.0 L CO2 x (3 mols O2/1 mol CO2) = 12 L.
- Chemistry - swag, Tuesday, January 21, 2014 at 7:39pm
Answer This Question
More Related Questions
- chemistry - given 2CH3OH+3O2->2CO2+4H2O 1. Calculate number of grams of CH3OH...
- Chemistry - CS2(g) + O2(g) CO2(g) + SO2(g) (a) Consider the unbalanced equation...
- Chemistry - I'm not sure how to do these...I keep getting the wrong answers... ...
- Chemistry - If 0.50L of gaseous CH4 is burned at STP, what volume of O2 is ...
- college chemistry - Consider the following equation: 4 NH3(g) + 5 O2(g)= 4 NO(g...
- Chemistry - Consider the following equation: 4NH3(g) + 5O2(g)----> 4NO(g)+...
- Chem - Carbon disulfide (CS2) reacts with excess chlorine (Cl2) to produce ...
- college chemistry - The solvay process in an industrial method for preparing ...
- chemistry - If 8.29 L of gaseous Cl2 measured at STP and 0.380 mol of liquid CS2...
- Chemistry-Equation - How many liters of hydrogen gas are needed to react with ...