Question

Help!!! I need 30 min to finish this problem :(

1. the equilibrium system 2A <-_-> 2B + C has a very small equilibrium constant. K = 2.6*10^-6. Initially, 3 moles of A are placed in a 1.5 L flask. Determine the concentration of C at equilibrium.

2.A 3 L flask initially contains 1.5 mol of gas A and .45 mol of gas B. Gas A decomposes according to the following reaction: 3A <-_-> 2B + C. The equilibrium concentration of gas C is .1 mol/L. What is the equilibrium concentration of gas A?

Thank you!

Answer 1

and 3. A + 2B -> C. 2 moles of A and 3 moles of B are placed in a 6 L container. At equilibrium, the concentration of A is 0.289 mol/L. What is the value of K?

Answer 2

@ganeshie8 @texaschic101 Could you guys help me please? I'm really in a hurry. :((
I really appreciate it!!!

Answer 3

1. Make an "I.C.E." table, write an equilibrium expression, plug your values (from the ice table) and solve.

2. same thing

Answer 4

@aaronq is perfectly correct! ...i think u need explanation
1.) if 3 moles of A is there initially in 1.5L vessel then what is its concentration??

Answer 5

ohhh

Answer 6

its concentration wud be 3/1.5 = 2 M

Answer 7

yes, so after I find 2 M,

Answer 8

I just simply work with that number?

Answer 9

ya,,,,apply the equilibrium formula K= [ ] [ ] / [ ]

Answer 10

hope u got it?

Answer 11

Yes I got it, but one more thing, so I would write the expression like 2 - 3x under the A section right?

Answer 12

its 2-2x not 2-3x

Answer 13

why? because the coefficient is 3 for A

Answer 14

um...i think u typed 2A in ur question lol

Answer 15

in the 1st question

Answer 16

oops, was looking at wrong problem but I got the idea. Thank you so much for your clarification! :)

Answer 17

and Thank you @aaronq for your instruction :)

Answer 18

real appreciate you two.

Answer 19

and remember to raise the concentrations of the reactants to the POWER of their respecitve coefficients in the equilibrium expression