solvay woes (1 Viewer)

[paper cup]

I know there's a thread but I'm not supposed to be on and this is quicker so yeah
the you is my teacher I was addressing her but I don't know if she's going to reply to my email because she's a busy busy person and so if anybody could help, appreciated!
A couple of things with the Solvay prac. What exactly is a side arm test tube?When you say'fit the stopper and delivery tube and clamp at a 30 degree angle to the retort stand' what do you mean? Which angle are you talking about - would it be possible for anyone to scan me a diagram of the set up for this experiment or even draw a rough one in Paint?
The observation would just be 'turns limewater milky' wouldn't it.
I have attached the prac writeup.
Please help, thanks

 

[richz]

ok.

hopefully my dodgy diagram will help

EDIT: just read ur prac write up sounds good to me, but i dunno about those eqns about adding salt and all that rubbish. i dont use chem contexts i use conquering chem

 

[paper cup]

ok.

hopefully my dodgy diagram will help

EDIT: just read ur prac write up sounds good to me, but i dunno about those eqns about adding salt and all that rubbish. i dont use chem contexts i use conquering chem

yeah I know it;'s gibberish at times. thanks, <3
the observation would be it turns limewater milky, wouldn't it?

 

[richz]

corrrrrrrreect

 

[richz]

cherry , Im thinking i misled u, not all of the eqns on that file are irrelevent.

These two are irrelevant
NH3(g) + CO2(g) + H2O(l) NH4HCO3(aq)

NH4HCO3(aq) + NaCl(aq) NaHCO3(s) + NH4Cl(aq)

the most relevent eqns for the solvay process are

Main one: CaCO3(s) + NaCl -> Na2CO3(s) + CaCl2

others: CaCO3->(heat) CO2 + CaO
CO2 + H2O -> H2CO3
H2CO3 + NH3 -> HCO3- + NH4+
HCO3- + Na+ -> NaHCO3(s)
or these steps can be summarised into one
NaCl + NH3 + H2O + CO2 -> NaHCO3(s) + NH4Cl

then 2NaHCO3(s) -> (heat) Na2CO3(s) + H2O + CO2

Then

ammonia recyling

CaO(s) + H2O -> Ca(OH)2

Ca(OH)2 + 2NH4Cl -> CaCl2 + 2NH3 + 2H2O

 

[littlemaster]

Wait, your in year 9 now, and in yr 7 when you wrote that post?

or are you doint your hsc over like 5 yrs??

sorry just curious of how a 7th grader knows the solvay process, i didnt even know what an atom looked like!