Dissolving Kalk

[Nautilus1]

When trying to dissolve any powder into solution it is always best to initially dissolve the powder in a smaller volume of water and then incfrease the volume after dissolved. For example, If i wanted to make 2 liters of sodium carbonate it is best to dissolve the it first in about 1.5 liters of water and then fill up to 2 liters after the powder has dissolved.
Given the precipitation reaction that occurs when mixing kalk and the CO2 consumption i was wondering if anyone knew if using this method would be beneficial or detrimental when mixing kalk.

 

[Anonymous]

I would guess it would be detrimental. The less mixing the better and mixing it twice is 100% more than mixing it once.

It's not Sodium carbonate, it's Calcium hydroxide (or Calcium oxide---> Calcium hydroxide).

 

[Nautilus1]

Thanks for your insight Guy. Yes I am aware of that. I was using carbonate as an example.

 

[Anonymous]

Thanks for your insight Guy. Yes I am aware of that.

Sorry, I misunderstood. From the subject line I thought you were discussing KALK. I don't think what I said would be true for most powders just KALK since it reacts with CO2 in fresh water.

I'd rather you be irked because I told you something you already know well than for you to be irked because I didn't tell you something important

 

[Nautilus1]

Its all good Guy. Why is too much mixing bad?

 

[Anonymous]

Calcium hydroxide reacts with dissolved CO2 pretty quick and at the PH of limewater quickly forms calcium carbonate. The more you stir the water the more CO2 enters the water = more wasted Calcium hydroxide. If you just do a quick stir it will form a film on the surface of the water that will slow down CO2 from entering the water.

 

[Nautilus1]

Oh I see. I always wondered about that.