mayorall:

The 3 had been input as the order of the reaction (i.e d power)....

mayorall:

Boss what about the solution to your question...

Kunlexic: This is on electrolysis(Electrochemistry)
1.state the two laws of Michael Faraday on electrolysis
2.Calculate the current that will deposit 0.16g of copper in 15minutes from copper(III)tetraoxosulphate(VI) solution.

mayorall:

Boss what about the solution to your question...

mayorall:

Trying solving with this formula
M = MmIT/zf

wie
M is mass
Mm is molar mass
I is current
T is time
z is the charge on the ion
f is the 96500

Kunlexic: The organ in man that perform similar function as the contractile vacuole of Amoeba is a.liver b.kidney c.lung d.skin e.bladder

mayorall:

Not in all cases boss....calculations on electrolysis is in different dimensions....solve with jamb past questions and see the dimensions...different in physics and chemistry

Kunlexic:
I=?,m=0.16g,t=15*60secs=900secs
Cu^2+ + 2e-=Cu, 2F liberates 1 mole of copper,2*96500=63.5g
then 0.16g of Cu will be liberated by 193000*0.16/63.5=486coulombs of electricity
from Q=it,where Q=486coulombs,time=900secs,then
486=i*900,i=486/900=0.54A.

joseboy199:
bro nxt tym try and complete ur questn,,,cuz in jamb it either d e.c.e is gvn or farday n molar mass is gvn
jamb can't set electrolysis lyk diz...
m=zit or M=MRQ/NF.dependin on d parameters gvn...tenx

Kunlexic:
I=?,m=0.16g,t=15*60secs=900secs
Cu^2+ + 2e-=Cu, 2F liberates 1 mole of copper,2*96500=63.5g
then 0.16g of Cu will be liberated by 193000*0.16/63.5=486coulombs of electricity
from Q=it,where Q=486coulombs,time=900secs,then
486=i*900,i=486/900=0.54A.

Kunlexic: The organ in man that perform similar function as the contractile vacuole of Amoeba is a.liver b.kidney c.lung d.skin e.bladder

mayorall:

Lolzz...aw dd u get coulombs of electricity without Current please....abi u fit cuk ric wtout heat ni........rmemba Q = It.....thats y I always tel u to gv optns....ya approach to the question invisibly is wrong...

Kunlexic: Na u sabi pass ooo,u supposed to hv known d parametres,its not evrytym u will be given d parametres since we hv known already dat molar mass of copper is 63.5 and 1F is 96500C

joseboy199:
He z ryt bro....

mayorall:

B kidney...Amoeba uses ontractile vacuole for excretion and man use kidney for excretion...

mayorall: N2 + 3H2 <===> 2NH3 Dh = -92kjmol^-1

Whats the effect of increasing the temperature of the system

A.The forward reaction will be favoured
B..Backward reaction will be favoured
C.The will be no effect
D.Both forward and backward reaction will be favoured.

joseboy199:
correct...it helps in osmoregulation...balancing of water and mineral salt in d body....
diz z wat d thread z al abt askin que,gvn que...2 make it interactive.4 a beta result...tenx bro

t.boy007:
B

mayorall: Which of the following gases will have the lowest rate of diffusion under the same conditions?

A.Argon
B.Chlorine
C.Nitrogen
D.Oxygen

mayorall: Which of the following reactions take place between vegetable oil and plant ash extract

A..esterification
B..Neutralization
C..Saponification
D..Fermentation

t.boy007:
A
REASON:Rate of diffusion is inversely proportional to the relative molecular mass....i.e the more the relative molecula mass,the less its rate of diffusion...therefore from the question,argon has the highest RMM,it will definately have lesser rate of diffusion

mayorall: Which of the following reactions take place between vegetable oil and plant ash extract

A..esterification
B..Neutralization
C..Saponification
D..Fermentation

joseboy199:
Since u knw ur Q=it,ist get d Q 1st and den substitute it into d 4mular 2 get ur I...lemme solve it in anoda way
m=mrQ/nf,whr
m=mass
mr=molar mass
q=quantity of electricity
n=numba of mole
f=farday constant
0.16=63.5*Q/2*96500
makin q d subj of d 4mularQ=0.16*2*96500/63.5,,,Q=486.299...,i=486.299/900,,i=0.5A
note,copper ion wil lose 2 electron 2 bcome copper metal

mayorall:

hmmm your reasons are actually right but the answer is wrong...RANJU MO D OPTIONS WELLA....

t.boy007:
B
reason:the equation is exotermic.thus,increase in temperature favour the reverse reaction which is the reactant

t.boy007:
C
REASON: (COOH) from vegetable oil and (KOH) from plant ash extract,the reaction of there two compounds is known as saponification