Chem

I was given a problem that my book did not explain how to do, so I attempted to figure it out myself. Let me know if my conclusion is fallacious.

Given the reactions
H2O(g) + CO(g) <--> H2(g) + CO2(g), K= 1.6
FeO(s) + CO(g) <--> Fe(s) + CO2(g), K= .67
Find K for the reaction
Fe(s) + H2O(g) <--> FeO(s) + H2(g)

I looked through the numbers and thought this:
In the second reaction, the K value is essentially based on CO(g) and CO2(g), because the pure solids have little/no effect on K. Looking at the reaction I am trying to find, I see that I am essentially finding K for H2O(g) <--> H2(g), because the pure solids do not affect the K value. With this knowledge, I subtracted the K value for [essentially] CO(g)<-->CO2(g) from the K value for H2O(g) + CO(g)<-->H2(g) + CO2(g), leaving me with the K value of H2O(g)<-->H2(g) [or .93]. Does this make sense?

No, it doens't.
H2O(g) + CO(g) <-> H2(g)+CO2(g) K= 1.6
FeO(s) + CO(g) <-> Fe(s)+ CO2(g) K=0.67

Call the first equation #1 and the second #2.
Reverse equation 2. K for that reversed is 1/K = 1/0.67.

Now add equation #1 to the reversed equation #2 to obtain the reaction you want. When adding equations, multiply Ks. So (1/0.67)x 1.6 = K for the final reaction.

1. 👍 0
2. 👎 0
3. 👁 272

Similar Questions

1. Algebra

My second question is in section 5.4, problem 39. x+4/x-2 < or = 1; Since the inequality in not , should the answer to this problem in the back of the book be: {x|x< or = 2}, or in interval notation: (-infinity, 2)? Please explain

asked by Mike P on January 11, 2013
2. math

How do you write a simplier problem for 23 x 20 ? I do not understand what the book says and my teacher want explain it the way it shows in the book? PLEASE HELP!!!!

asked by Miranda on September 25, 2010
3. Trig

Find an equation for the hyperbola described. Foci at (-4,0) and (4,0); asymptote the line y= -x. Please explain the steps of this problem. My book does not get an example of this type of problem and I'm not having any luck

asked by EVJ on July 19, 2011
4. math

Book 1 255 book 2 235 book 3 178 book 4 299 book 5 150 book 6 67 book 7 82 book 8 267 book 9 188 book 10 142 book 11 281 book 12 138 book 13 326 book 14 264 book 15 103 ^ number of pages What would be the best graph or display to

asked by :I on April 30, 2017
5. Math

1. Use the associative property to rewrite the expression 97 + (3 + 13) I rewrote this as (97 + 3) + 13 since the associative property is about changing the grouping. The answer in the back of the book says 97 + (3 + 13) -- the

asked by Carly on February 21, 2016
6. English- A little help please

I am doing my plot summary on the Book Royally Jacked and I really want to know the significance of this title towards the book. I can't seem to explain it well. Royally stands for the royal family in this book whom Valerie and

asked by Sara on June 14, 2010
7. Arithmetic

A box in a college bookstore contains books, and each book in the box is a history book, an English book or a science book. If one-third of these books are history books and one-sixth are English books, what fraction of the books

asked by Peltier on March 19, 2013
8. Math

8*2sq+7*(4+1)= ? Can someone explain to me what to after the parenthesis? I mean in the PEMDAS of operations says that I should multiply. Multiply what and when? By the way the actual problem is a example I got out of my book.

asked by Rindi on August 11, 2007
9. Math

Can someone explain this problem to me, I cannot figure out how they came up with the answer. The example in my book does not work with this problem. Find the minor for the element in the 1strow and 2ndcolumn. -3 2 -1 19 13 -18

asked by Sara on April 26, 2008
10. math

A book publisher is shipping a new book in boxes of 200. If 30 boxes fit in 1 shipping crate, how many books are in 20 shipping crates? Explain the mental math you used to solve the problem.

asked by Deshawn on September 2, 2014
11. Math

Explain It In one night, George reads 3 chapters of a book with 27 chapters. After the second night, he has read a total of 8/27 of the book. Explain how you would determine the number of chapters George read the second night.

asked by Amri on February 11, 2015

More Similar Questions