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Posted by on Monday, October 25, 2010 at 10:07pm.

Hi! is my answer correct?

Consider the following chemical reaction:

H2 (g) + I2 (g) <> 2HI (g)

At equilibrium in a particular experiment, the concentrations of H2, I2, and HI were 0.15 M,
0.033 M, and 0.55 M, respectively. The value ofKeq for this reaction is

I solved by:

0.55 M^2 (bc of 2 on 2HI)
-----------------
(0.033 M)(0.15 M)

= 61

  • Chemistry check my answer? - , Monday, October 25, 2010 at 11:20pm

    Looks good. Congrats. I would have put the squared sign over the 0.55 since it's the number you are squaring and not the unit. Technically, although molarity is what we substitute, Keq has no units. (Because the numbers that go there are activities. We use molarities in 99% of the problems you will see).

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