Chemistry P31

[Osmix1995]

yea bt calcium oxide is also insoluble

no calcium oxide is slightly insoluble ,,, so it is solouble

 

[L-Girl]

how much mark ws it

2

 

[Abu mota]

2 marks one for formula and one for state symbols as some people say but i think it is one mark for balanced and one for formula

 

[white rose]

yea bt calcium oxide is also insoluble

no it is soluble

 

[white rose]

2

oh nooo...but cud i get mark for da state symbols

 

[L-Girl]

oh nooo...but cud i get mark for da state symbols

yes of course

 

[Alan Khaledi]

no it is soluble

shiiiiiiiiit!!! i wrote it is insoluble and then reased it

 

[L-Girl]

oh nooo...but cud i get mark for da state symbols

what did u write?

 

[white rose]

yes of course

ws it (aq) (aq) = (s)

 

[bluefa1con]

if u hav 2 eyes then u must have seen tht there were bubbles Around A so "A" RUSTED BUT U R ALSO CORRECT ABT "B"..............HOPE BOTH OV them ARE CORRECT.......if the reasons stated are correct !!!!!!!!!!!!!!!!!!!!!!

if you have brain you would know that B is losing electrons
anyways i am not continuing this argument there is more than enough reasons to believe B was correct answer

 

[L-Girl]

ws it (aq) (aq) = (s)

what's that

 

[bluefa1con]

i rote B bcoz lose of electrons.....hope its correct

it is correct there is no reason to argue with these people
they are in denial and we cant help them

 

[EpicLol]

this is a cell, and the more reactive metal is the anode.
oxidation always occurs at the anode

Yes but there are types of cells.....the type of cell u r talking about is the one with a metal and a non metal....look when u have a cell of like 2 different reactive metals, then the more reactive one goes into the solution as ions and gives out electrons...so this is the cathode as electrons flow from cathode to anode....in here since they flow from B - A....B is being oxidised as it is the cathode....

 

[L-Girl]

if you have brain you would know that B is losing electrons
anyways i am not continuing this argument there is more than enough reasons to believe B was correct answer

Oh yeeeessss B is the correct answer

 

[IGCSE O/L student]

yeah but da charge for Ag is 2+

dude, if they say silver(I), it means the valency of silver is 1. silver is a transition metal

 

[bluefa1con]

yeah but da charge for Ag is 2+

wrong
its a transition metal
variable oxidation state
but 1 was mentioned in question

 

[IGCSE O/L student]

Yes but there are types of cells.....the type of cell u r talking about is the one with a metal and a non metal....look when u have a cell of like 2 different reactive metals, then the more reactive one goes into the solution as ions and gives out electrons...so this is the cathode as electrons flow from cathode to anode....in here since they flow from B - A....B is being oxidised as it is the cathode....

whatever it is, oxidation always occurs at the anode.

 

[EpicLol]

But since when does oxidation occur at anode?!?!

The electrons flow from cathode to anode, and since oxidation is loss of electrons, oxidation always takes place at the cathode not anode.....

 

[Abu mota]

http://9gag.com/gag/4326034

 

[white rose]

what's that

dats da state symbol of Ag+ + Cl-= AgCl