Law of mass action is applicable for only reversible
chemical reactions and it is an imperial law.
The law state that “ At a fixed temperature the rate of a chemical
reaction is directly proportional to the product of reactive mass of reactants
raised to the their respective Stoichiometric
cofficients ” The law of mass action is by Guldberg and Waage.
(1) Equilibrium
Constants in term of concentration ( KC):
At the constant
temperature, let us consider the following reversible reaction
According to
law of mass action - The rate of forward reaction
The rate of reverse
reaction-
Where Kf and
Kb is the rate constant of
the forward reaction and backward reaction respectively
We know at equilibrium,
the two rates of forward as well as backward are equal. ie
Rate of
reaction = Rate of forward reaction – Rate of backward reaction = 0
Kc=Kf/Kb
Unit of Kc= (Conc)ng
(2) Equilibrium Constants in term of Pressure( Kp):
From law of mass action- rate forward reaction is directly proportional to product of active mass of reactants and rate backward reaction is directly proportional to product of active mass of products.
For an ideal gas PV=nRT
Where
P= Pressure in atm
V=Volume in liters
n=Number of gaseous moles
R=Gas constant
= 0.0821 L atm/mol/K or 1/12 L atm /mole/K
T=Temperature in kelvin
= total number of moles of gaseous products -total number of moles of
gaseous reactants
EXAMPLE (1): At 700 K, the equilibrium constant Kp, for the reaction
is 1.8 × 103 kPa What is the numerical value of Kc for this
reaction at the same temperature
SOLUTION:
EXAMPLE (2) : Methanol (CH3OH) is manufactured industrially by the reaction
CO(g) + 2H2(g) ⇌ CH3OH(g)
The equilibrium constant (Kc) for the reaction is 10.5 at 220°C. What is
the value of Kp at this temperature ?
SOLUTION: Give Data ,Kc = 10.5 ,T= 220oC = (220 + 273)K = 493 K
EXAMPLE(3): For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g) The Kp is 4.3 × 10-4 at 375°C. Calculate Kc
for the reaction. ?
SOLUTION:
EXAMPLE(4): The value of Kc for the reaction is 0.50 at 400º C.
What will be the value of Kp at 400ºC when concentration are expressed in mole
litre.1 and pressure in atmosphere ?
Well written article. Please check these articles also.
ReplyDeletewww.ABestPro.com
Best screen house for picnic table
Best camping canopy for rain
Best coleman screen house
Best rei screen house
Best pop up screen tent with floor
Best screen house with floor
Best clam screen house
Best camping rain shelter
Well written article. Please check these articles also.
www.ABestPro.com
Huawei Mate 20 Pro tripod selfie stick
Huawei Mate 20 Pro premium tripod
Huawei Mate 20 Pro selfie stick
Huawei Mate 20 Pro selfie stick bluetooth
Huawei Mate 20 Pro selfie stick wireless
Huawei Mate 20 Pro best selling tripod
Huawei Mate 20 Pro tripod wireless
I am unquestionably making the most of your site. You unquestionably have some extraordinary knowledge and incredible stories. jameslnowlin
ReplyDeleteOne thing to keep in mind is that the hired lawyer still owes a duty to both the court and his client to be diligent and prepared when he or she accepts the case - no matter how minor it is.criminal defence lawyer in Toronto
ReplyDeleteIt does not always happen this way because many apparently mundane moments within our lives carry the seed of questions yet unanswered- and if we look closely, profound answers are lovingly contained in those special moments of time.Brian Holm Attorney San Diego
ReplyDeleteIn the event that you are keen on the malpractice attorneys near me prerequisites to turn into a lawyer you are perusing the correct article.
ReplyDeleteI hope you will share such type of impressive contents again with us so that we can utilize it and get more advantage. Personal injury law
ReplyDeleteThere are amazingly unpredictable issues that emerge when you are harmed or harmed by a therapeutic gadget. injury attorney pittsburgh
ReplyDeleteFor many people this is the best solution here see how to do it. navigate here
ReplyDeleteI am really enjoying reading your well written articles. It looks like you spend a lot of effort and time on your blog. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work. dui attorney
ReplyDeleteYou completed certain reliable points there. I did a search on the subject and found nearly all persons will agree with your blog. palm beach county traffic ticket
ReplyDeleteThey're produced by the very best degree developers who will be distinguished for your polo dress creating. You'll find polo Ron Lauren inside exclusive array which include particular classes for men, women. Application for Unlawful Termination
ReplyDeleteFreedom Firm DWI lawyer Houston Personal injury law has been the subject of much criticism for a few main reasons, most notably for the so-called 'compensation culture' it is believed to have created.
ReplyDeletei never know the use of adobe shadow until i saw this post. thank you for this! this is very helpful. Affordable DUI Lawyers Barrie
ReplyDeleteSignificant law office choices ought to never be made in a vacuum. All things considered, they ought to be made with a wealth of the correct data close by. For some, law office choices, "the correct data" signifies serious knowledge. SLAM Method for constructing a map
ReplyDeleteYou made such an interesting piece to read, giving every subject enlightenment for us to gain knowledge. Thanks for sharing the such information with us to read this... Dr. Gőz Péter ügyvéd Debrecen
ReplyDeleteFriend, this web sFriend, this web site might be fabolous, i just like it proceso de migracionite might be fabolous, i just like it proceso de migracion
ReplyDeleteI guess I am not the only one having all the enjoyment here! keep up the good work... immigration process
ReplyDeleteFriend, this web site might be fabolous, i just like it proceso de migracion
ReplyDeleteGreat article about divorce cases this is very important to legal solution for it pklegal.Cosmetic Surgery
ReplyDeletehowdy, your websites are really good. I appreciate your work. https://dr-goz-peter-ugyved.business.site/
ReplyDelete