Indeed baking soda all over the world is the same NaHCO3.Matrix wrote: I think baking soda which we use in cooking all over India has same proportions...
I am referring to the densities mentioned in this link http://www.onlineconversion.com/weight_ ... ooking.htm
However let us imagine...
That you have soda bicarb with crystals 1cm across and fill up a 1l container and weigh it to x grams so the density is x/L. Fair enough!
Well afterwards somebody comes around and adds soda bicarb crystals just 0.1cm across into the same 1l container. Quite possibly he would be able to add some (y) so that they would fall between the larger crystals. So although your soda bicarb actual volume has increased and so the weight also, you 1L container need not overflow. Your measured density is now x + y/L
Now I come along and add superfine dust like soda bicarb, sure enough, I am able to add some more, (z). So now the density is x + y + z/L.
The problem I wanted to point out is that, while density of soda bicarb is fixed and immutable our measurement of volume is flawed by differing crystal sizes. I concede my above example was exaggerated but that's only for illustration. I also concede that if you exclude all air from your soda bicarb it will reflect the true density of soda bicarb. Which brings us to the question if the site you mentioned went to all this pain to measure soda bicarb.
In contrast saturation solubility is like density a fixed property and easy enough to do.
If you need not be that accurate you can just chuck all of this theory out of the window and assume 1gm of soda bicarb is 1.1ml. With a 2 ml syringe which has markings of 0.1 ml you just can't reach the accuracy demanded by 1.071 ml.
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/ also searching for mini weighing scale.
