Buraian's not so secret hideout

« first day (523 days earlier) ← previous day next day → last day (635 days later) »

12:33 PM

@PrithuBiswas H2O usually gives out one OH- molecule, see how much the oxaclid acid dyhydrate gives out (I guess two) and use that to ablance @PrithuBiswas

1 hour later…

Prithu Biswas

1:34 PM

@Beautifullyirrational I am not sure If I understood what you said.

Beautifully irrational

2:11 PM

ask what you didn't get @PrithuBiswas

Prithu Biswas

What does "use that to ablance" mean?

Beautifully irrational

Well it's like

you have to figure out how many hydrogens an acid typically likes to give out

and how much OH- the given base likes to give out

Prithu Biswas

Well, our teacher never mentioned that.

Beautifully irrational

It is actually an interesting point because if you don't take it in account some problems you'll get the wrong answer. Like it maybe that when certain acid and bases are paired together the acid gives more hydrogen or base givens more OH-

Prithu Biswas

Our first task was to prepare a 1M solution of oxaclid acid dyhydrate wil a volume of 100ml.

Beautifully irrational

2:18 PM

It seems to me that oxalic acid gives two protons

>Oxalic acid has two acidic protons. The initial ionisation yields HC2O4-, a weak acid that will ionise as well.

Source

Prithu Biswas

Usually I would first add 12.6g of solute, and then keep adding water until the volume is 100ml.

@Beautifullyirrational Unfortunately I don't know anything about acid-base chemistry.

Beautifully irrational

Oof, if you get time Read David Klein's Organic Chemistry book

I think it depends on how well the oxalic acid dissolve

I am not sure if 100ml solution means 100ml of additional water or oxalic acid combined with water is 100ml

if oxalic acid dissolves well then it doesn't matter

Prithu Biswas

oxalic acid combined with water is 100ml

Beautifully irrational

I mean it depends on how much it dissolves right

If it doesn't dissolve it takes more volume

if you combine the oxalic acid powder with the water and shake it till it mixes, if it does actually dissolve well, it should be that the total volume shrinks a lil bit

Prithu Biswas

@Beautifullyirrational Like mixing NaCL with H20?

Beautifully irrational

2:23 PM

Sure

if you mix the two, it should be that volume of initial stuff is greater than volume of final stuff

Q: Why there is no change in water level when salt is added?

Let us say we have one glass of water and after that when we add one or two spoon of salt then we notice that salt dissolves in it but when we measure the water level we found that there is no difference between initial reading and final reading. So what's happening over there ? Why water level d...