# ws3302-1 - in the blank regions R eaction CH 4(g 2 O 2(g>...

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CH302 Worksheet 3—Introduction to Chemical Equilibria 1. Write a mass action quotient (aka mass action expression) for the general equation below: aA + bB cC + dD 2. What sort of mathematical relationship exists between Δ G and K? Which of these terms should have a wider range of possible values? 3. What is the difference between Q and K? 4. What can you for certain about Δ G when K is less than 1, equal to 1 or greater than 1? 5. Based on your answer to question 14, what does the value of K tell you about the spontaneity of a reaction? 6. If a given reaction has K = 10, and presently has a Q = 5, what must happen in order for the reaction to reach equilibrium? 7. Based on your understanding of reaction stoichiometry, complete the RICE diagram below by filling
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Unformatted text preview: in the blank regions. R eaction CH 4 (g) + 2 O 2 (g) ----> CO 2 (g) + 2 H 2 O(g) I nitial 10 moles 19 moles C h a n g e E quilibrium 1 mol 10 moles 25 moles 8. Write a mass action quotient and determine K for the reaction in question 7. K = [CO2]·[H2O] 2 / [CH4]·[O2] 2 = 10·25 2 / 1·1 2 = 6,250 9. If the equilibrium established in question 7 were disturbed by the addition of 90 moles of CO 2 , what would the value of Q then be? Fill in a new RICE diagram, using X for unknown values. R eaction CH 4 (g) + 2 O 2 (g) CO 2 (g) + 2 H 2 O(g) I n i t i a l C h a n g e E quilibrium 10. How will the system respond to the stress in question 9 in order to re-establish equilibrium?...
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## This note was uploaded on 06/14/2011 for the course MATH 305G taught by Professor Cathy during the Spring '11 term at University of Texas.

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