Qualification > Queries
ANY DOUBTS HERE!!!
The SMA:
Need help plz! on A2 Maths paper 3 M/J 04
Q5 (i), Q8 and Q11 (ii)
nid404:
--- Quote from: ~ A.F ~ on April 19, 2010, 11:27:19 am ---in 7 minutes
--- End quote ---
thanks A.F
I'm trying to figure waves :-X :-[
sweetie:
--- Quote from: nid404 on April 18, 2010, 10:43:54 am ---15) C
when a compound has no charge...
u equate the ox states to 0
A NH4Cl NH4 has ox state of +1 so Cl will be -1 ruled out
B NH4ClO3 +1 + (3x-2)[oxygen has state -2) + cl=0
Cl= +5 rule out
C NH4ClO4 +1 + (4X-2) + Cl=0
Cl=-7 here we got it :)
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oops, i guess u xplained da wrong que., it waz q17!!!!!
sweetie:
--- Quote from: nid404 on April 18, 2010, 10:35:07 am ---11)
2HI(g)<-----> H2(g) + I2(g)
initial b 0 0
final b-x x x
total no of moles= 4
pressure = p
*pp=partial pressure
Kp= ppI2 XppH2/ pHI2
ppI2 and H2= x/4 Xp ( moles/total no of moles X total pressure)
ppHI= b-x/4 Xp
Kp= (xp/4)X (xp/4)
-------------
((b-x)p/4)2
=___x_2__
4(b – x)2
D
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but when i simplified the eqn. u got for Kp i didnt get the rite ans.
cud u plz solve it and send it to me??????
nid404:
--- Quote from: notty_me on April 19, 2010, 01:34:20 pm ---but when i simplified the eqn. u got for Kp i didnt get the rite ans.
cud u plz solve it and send it to me??????
--- End quote ---
ok my bad...
that four kinda vanishes...ill do it agn..i must've made a mistake in a hurry
ill check
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