Posted by AMI on Friday, March 26, 2010 at 1:54pm.
1. You didn't finish the problem What is the concn of ??????at equilibrium?
2. Note the correct spelling of celsius.
Kc = (PCl5)/(PCl3)(Cl2)
Convert moles to M. Set up an ICE chart and solve.
Consider the following equilibrium:
PCl3 + Cl2 = PCl5 Kc=26 @ 250 degree Celcius
1.0 mol of PCl3 , 1.0 mol of Cl2 , and 5.0 mol of PCl5 are placed in a 10.0L flask at 250 C and allowed to come to equilibrium. What is the concentration, in M, of Cl2 at equilibrium?
Choose one answer.
I set up ICE:
PCl3 + Cl2 = PCl5
I 1.0/10.0 1/10.0 5/10.0
C -x -x +x
E 0.1-x 0.1-x 0.5+x
so I then take the sqaure root of both sides to get rid of the ^2 then multiply 26(0.1-x)=0.5+x then take the square root of both sides
but then I think I am confused in my math because I am thinking set up a quadratic equation formula for this problem?????Please Help
You have it going the wrong way. See my comments at your later post. Also, you can't solve by taking the square root of both side BECAUSE there is no squared term on top (just on the bottom). You must solve the quadratic equation.
chm152 - PCl3 + Cl2 = PCl5 Kc=26 @ 250 degree Celcius 1.0 mol of PCl3 , 1.0 mol ...
chemistry - A reaction starts with 1.00 mol each of PCl3 and Cl2 in a 1.00-L ...
Chemistry - When a sample of PCl5(g) (0.02087 mol/L) is placed in 83.00 L ...
chemistry - Phosphorus pentachloride decomposes according to the chemical ...
Chemistry - Consider the reaction: PCl3(g) + Cl2(g) PCl5(g). If [PCl3] = 0.78 M...
chemistry - Given the equilibrium system PCl5(g) <---> PCl3(g) + ...
chemistry - Given the equilibrium system PCL5(g) <----->PCl3(g) + ...
CHEMISTRY - Equilibrium Equation with Partial Pressures PCl3(g) +Cl2(g) <...
Chemistry - a 1.00-mol sample of phosphorus pentachloride placed in 10.0-L ...
CHM 152 - Consider the following equilibrium: PCl5 = PCl3+ Cl2 5.0 moles of are...
For Further Reading