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hahaha.............i gt it............omg!!cyclone94 see what i mean
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hahaha.............i gt it............omg!!cyclone94 see what i mean
told youhahaha.............i gt it............omg!!
okiez...sry fr disagreeing......lol!!told you
D?Ammonia is manufactured by the Haber Process, in an exothermic reaction.
Assuming that the amount of catalyst remains constant, which change will not bring about an
increase in the rate of the forward reaction (http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s12_qp_11.pdf)
A decreasing the size of the catalyst pieces
B increasing the pressure
C increasing the temperature
D removing the ammonia as it is formed
OOOhh i get noww!! Jazaki Allah khairan, (I am the one to be sorry, disturbing you) May Allah S.W.T bless you with highest grades in this life and hereafter, And May Allah S.W.T bless you and your family with Husn-ul-Khatima Aameen...Thanks alottttt ALOOOOT!!!!!! May Allah reward with more and more deeds Aameen>!!The conc. oc Mg(OH)2 would be the same as the conc. of Mg2+ ions as the mole ratio is 1:1
Mg(OH)2 -------> Mg2+ + 2OH-
assume that the conc. og Mg2+ is x, then the conc. for OH- would be 2x
Ksp =[Mg2+] [OH-]^2
2*10^-11 = [x] [2x]^2
2*10^-11 = x* 4x^2
2*10^-11 = 4x^3
solve to get the value of x, which is the conc. og Mg(OH)2
Sorry for replying so late.
Yes, but why?
the formulae Q=m x c x delta theta the mass of the solution = the volume of the solution?
and solve http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w11_qp_22.pdf Q3b part ii
The question asks about rate,Yes, but why?
Please explain using understandable english and in full detail. Thanks (Btw I'm still confused about my previous question, asked a few pages back).
Ammonia is manufactured by the Haber Process, in an exothermic reaction.
Assuming that the amount of catalyst remains constant, which change will not bring about an
increase in the rate of the forward reaction (http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s12_qp_11.pdf)
A decreasing the size of the catalyst pieces
B increasing the pressure
C increasing the temperature
D removing the ammonia as it is formed
Noble answer.. <3The question asks about rate,
Less catalyst , will make rate slower.
increase pressure more collision therefore higher rate
increase temperature, the gases move faster and more collisions therefore higher rate
removing ammonia will lead to more ammonia forming but with the same rate, NOT faster or slower.
get it?
If the question specify what to put, then add what they want.hello everyone , al salm alaykom , I need help please , in the marking scheme of the practical papers regarding enthalpy changes , sometimes they want the thermometer reading to the nearest 0.5 where as sometimes to the nearest whole number , how am I supposed to know? and why is it different in a different paper? like if my exam involves enthalpy changes , what am I supposed to write? pleasee do help me , any one?
9 Two moles of compound P were placed in a vessel. The compound P was partly decomposed by
heating. A dynamic equilibrium between chemicals P, Q and R was established.
At equilibrium, x mol of R were present and the total number of moles present was (2 + x).
What is the equation for this equilibrium?
A P 2Q + R
B 2P 2Q + R
C 2P Q + R
D 2P Q + 2R
Explanation Please.
Yes the answer is B.My gut is saying answer is B. What's the answer?
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