₦airaland Forum

Kendzyma: ,,,,waw tanx......so dat means if we given da solubity and told to find d product....we gna mak ksp sub of 4mula rit?....givin ksp=sb(x^x . Y^y)^(1/x+y) rit?

EXACTLY, CONFIRM. when you make it subject of formular it becomes something like this
ksp=[sb]^(x+y) * x^x * y^y

practice with more examples at your convenient time

Kendzyma: ...taanx dude....da solubility product of a sparinly soluble salt CACL2 is 1.08 * 10^-7 mol^3dm^9....wats da solubility of d salt....pls strictly with da fmula o...wana no hw to apply it

ok. now first we have that
CaCl2--->Ca2+ + 2Cl- now x=1 and y=2 now the formular says solubility is given by

sb=(ksp/x^x. y^y)^[1/(x+y)]
so we have now that sb=[(1.08*10^-7)/(1^1 * 2^2)]^[1/(1+2)]

so, sb=[(1.08*10^-7)/(1*4)]^(1/3)

sb=[(1.08*10^-7)/4]^(1/3)

now when you divide 1.08*10-7 by 4 you get 2.7*10^-8 so you now have sb=[2.7*10^-8]^(1/3) now you see that it's raise to power 1/3 which means you cube root 2.7*10^-8 your final answer becomes 3*10^-3 mol/dmf

Kendzyma: ........plz tell me da formula na......dnt av prob wit calculatin da solubilty product itself bt..d prob is wen dey give us da solubility product and tell us to find da solubility...any general rule or formula 4 dat 2?

or perhaps you can drop your question lets tackle it with this formular

Kendzyma: ........plz tell me da formula na......dnt av prob wit calculatin da solubilty product itself bt..d prob is wen dey give us da solubility product and tell us to find da solubility...any general rule or formula 4 dat 2?

ok this is it.

Sb= (ksp/x^x. y^y)^[1/(x+y)]

where sb=solubility, and ksp=solubility product. x and y are the number of moles
of each element when decomposed respectively for example AgCl---->Ag+ + Cl- . the number of moles of Ag is 1 and Cl 1 so x=1 and y=1, also for a compound like Ca(NO3)2 it becomes

Ca(NO3)2----->2Ca+ + NO3- therefore x=2 and y=1 That's each of x and y represents the number of moles of each radical. Now x and y determines the power. for AgCl where x and y are both 1 the power becomes 1/(1+1) That's 1/2 which means you square root, also for Ca(NO3)2 where x and y are 2 and 1 respectively you have in the power according to the formular 1/(2+1) That's 1/3 which means you cube root

Kendzyma: Dey jusy love questions on solubility product

I love the topic well well. make sense o, the topic sweet. one scholar tutor give us one bad formular to take kill solubility product any how dem set am

Samtolly4JESUS: i heard some lecturers accept non-programmable just like Jamb's while some lenient ones accepts scientific, i even heard some few sadists dont accept the use of calculator at all! But whichever way, keep your Faith fixed on God and Hope for the Best. #shalom#

Thanks

Samtolly4JESUS: yea, there is space for rough work. Just hope you best.

Thanks, what about calculator?

Please is there space allocated in the question paper for rough calculation? and what about the use of calculator

shakur07: D tin is 72mins oh and bet it wit me d time will waka kiakia ni **

God help me o, I go do English, come SOLVE MATHS, CALCULATE PHYSICS, REASON CHEMISTRY.. under 72<x<75 minutes. God will speed me up Amen o, and all of us that trust in him

jaryeh: Its 1 nd a half hour for nt up to 100 questionz.

I think it's 75minutes from previous years. that's 1hour 15minutes

Adefemi88: OAU Post Utme forms are now on sale @ some banks on Campus. Notably Eco Bank, @d price of #1250. For help, and further info, on hw2get d forms, utme past questions , tutorial classes, admission assistance. Note: @ no cost2u, we r only a group of OAU undergraduates 4rm RCCG Executive parish willing to render assistance to u@no cost.Call these lines,Bro' Adefemi Microbiology 08061249764, Blue prince Mcb 08178204962, FM Medicine 08178203269. God bless u all.

wow. I've got to get mine o, when is the dead line?

shakur07: Shey biochem peepz no dey ds thread ni ** me neva cee any of ma coursematws to be oh*

same with Engineering o

Samtolly4JESUS: *laughing in dutch*

haha, na so o, man need to jack for this post ume wella, In all God is our strength

man must jack

Why Engineering aspirants scarce?

Kendzyma: na 2100000000 dibu gav me o

Post ume is all that matters most now, just bring it down bro and you're in.

Kendzyma: guy ...can i b given my sec choic wich iz bio chem if i dnt meet up to da mbbs cut off in oau bt passd biochem cut off

I think so, but just aim high in your post ume. what's your ume score?

OmolodMilkman93: sorry, I had exams dis period,... No news abt post ume yet, though rumors re fling arund, dey hve nt been confirmed

Thanks

please follow your thread and help us with info

Kendzyma: ,,mbbs,,do u av any idea about da num of mbbs candidates dat had 200+ in oau?

we can't tell now, we will know after post ume

Kendzyma: which of d folowin metals would b in passive state when treatd with conc HNO3....A ZN....B NA....C :.SN.....D:....Fe

it's Fe

Kendzyma: gud prof....wich cours?

Chemical Engineering, and you?

Kendzyma: wich of dis will disolv in wata to form a neutral solution.....A NH4cl...B....KCL...C.....NA2CO3...d....CH3OONA

KCl is neutral in water since it's formed from a strong acid and a strong base

E be like say engineering aspirants scarce for this thread o. I haven't come across any since, anyone please?

Uc8mille: is dt ur choice

yes, my 2nd choice though, going for chemical engineering

someone told me form has started selling in campus for the post ume, please someone should confirm this

Any Engineering aspirant here?

Any info on the post ume form?

what's the nature of uniport post ume, is it the same 4 subjects in jamb?, and what about the use of calculator?, maybe non programmable?