PROBLEM_SET_ON_CHEMICAL_EQUILIBRIUM.pdf

of 2
11 views
PDF
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Document Description
PROBLEM SET ON CHEMICAL EQUILIBRIUM CHEMISTRY STANDARD SHORT RESPONSE. Answer the following questions on the space provided. Show all the pertinent solutions and box your final answer. [25 marks] 1. Discuss the application of Le Chatelier’s principle in the Haber process in terms of (a) concentration, (b) temperature, (c) pressure, (d) catalyst used. [4] …………………………………………………………………………………………………………………………….. ……………………………………………………………………………
Document Share
Document Tags
Document Transcript
    PROBLEM SET ON CHEMICAL EQUILIBRIUM CHEMISTRY STANDARD SHORT RESPONSE . Answer the following questions on the space provided. Show all the pertinent solutions and box your final answer . [25 marks] 1.   Discuss the application of Le Chatelier’s principle in the Haber process  in terms of (a) concentration, (b) temperature, (c) pressure, (d) catalyst used. [4]   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..  2.   Given the following two reactions and their equilibrium constants:  Ag +(aq)  + Cl -(g)  AgCl (s) K  c = 1.0 x 10 10  Ag+ (aq)  + 2NH 3(aq)  Ag(NH 3 ) 2+(aq) K  c = 1.6 x 10 7   a) Define equilibrium constant. [1] ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..  b) Calculate the K  c of the reaction: [4]  AgCl  (s)  + 2NH 3(aq)  Ag(NH 3 ) 2+(aq) + Cl -(g) ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..  3.   a) Using the equilibrium constants and reactions below, determine whether each of the following systems is in equilibrium. If the system is not in equilibrium, predict the direction where the reaction will proceeds. [6]  i.   H 2(g)  + I 2(g)  2HI (g) K  c =49   [H 2 ] = 0.10M; [I 2 ] = 0.20M; [HI] = 0.70 M ii.   2H 2(g)  + O 2 (g)  2H 2 O  (g) K  c = 9.1 x 10 80   [H 2 ] = 3.0 x 10 -30 M; [O 2- ] =4.0x10 -26 M; [H 2 O] = 0.0180M iii.   2N 2 O (g)   2N 2(g)  + O 2(g) K  c = 7.0x10 34   [N 2 O] = 2.4 x 10 -18 M; [N 2 ] = 0.0360M; [O 2 ] = 0.0090M ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..      b) Define a reaction quotient [1]   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..  4.   Given the equation: [5]   CH 4(g)  + 2H 2 S (g)  CS 2 (g)  + 4H 2 (g) ∆= +   -1 What will be the effect on the equilibrium if:  A.   H 2 is added D. CS 2 is removed   B.   CH 4 is added E. temperature is increased   C.   volume of the container is decreased ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..  5.   Consider this reaction: H 2(g) + Br 2(g) 2HBr (g) The combination reaction of hydrogen and bromine gas to produce hydrogen bromide is in equilibrium. a)   Define equilibrium. [1]   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..  b)   Write the equilibrium constant expression of the reaction and calculate its K  c  value. [3]   [H 2 ]=0.25 M; [Br 2 ]= 0.10 M; [HBr]= 0.345M ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..   ……………………………………………………………………………………………………………………………..  
Search Related
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks
SAVE OUR EARTH

We need your sign to support Project to invent "SMART AND CONTROLLABLE REFLECTIVE BALLOONS" to cover the Sun and Save Our Earth.

More details...

Sign Now!

We are very appreciated for your Prompt Action!

x