Do soluble tablets dissolve quicker if they are stirred or do they have a defined dissolving time?
412580
Yes they would dissolve quicker. The rate of the dissolving depends on the concentration gradient. When you first put the tablets in, there is no tablet dissolved so the gradient is highest and the rate is quickest. As it dissolves, the surrounding liquid becomes more concentrated with the tablet so the rate of dissolving slows. Brownian motion will eventually disperse the concentration to the whole liquid, but if you stir the liquid, you are eliminating the local high concentration around the tablet immediately.
1024294
When you dissolve any substance the state will be change either from solid to liquid or semisolid but when you dilute the power of the substance will be reduce usually with water.
245063
Baking soda (sodium bicarbonate) dissolves faster.  Flour doesn't dissolve, it's a suspension.
528373
It has to do with the "activiation energy" involved in the process, increasing the stirring rate in a certain manner, increases the rate of collisions which increases the rate of reactions.  Solubility has to do with the free energy which are state functions with respect to temperature; the reactant and product states. Rates of reactions pertain more towards transitions states.
754463
It's not the pill that makes it dissolve it's your body's enzymes that cause the pill to dissolve.  tablets usually dissolve more easily than caplets
905525
In general smaller particles have more surface area so the solvent can solvate and pull molecules away from the bulk crystal more efficiently.  \n\nThe key to solubility is solvent access to the solid material. \nOn a surface of a particle only the outermost part can be solvated so if there is a lot of surface area in one sample compared to another, the large surface area to volume ratio particles will dissolve more efficiently.
248637
Yes it depends on the medication, but that is a reflection of the molecules physical properties.  Molecules which are basic (or alkaline) ionise to some extent at low (acid) pH (as found in the stomach).  When ionised, the cannot diffuse across the lining of the stomach as well (or at all) - but in the large and small intestine, the pH is more alkaline, and basic drugs are less ionised and diffuse better.  \nWheras acidic drugs do not ionise in acid pH, so tend to diffuse across the lining much better.  \nTo add to the complications, solublity of drugs can change depending on pH as well - this is where fats such as those in semi-skimmed or full-fat milk can help as many drugs dissolve well in organic or fatty liquids (non-polar solvents).  It is far easy for a dissolved material to cross the lining of the gut than a particulate of solid, undissolved material.\nAnd then to add further complications, the contents of the gut may affect the rate of absorption - if you have had a large meal, absorption can be slowed because the drug is dispersed in a large volume in the stomach.\nIt's a difficult question to answer more specifically unless there is a drug of particular concern/interest!
601042
Powder is easy to compress under pressure and form into tablets.  Maize starch in particular dissolves quickly in liquid and therefore releases the active ingredient into the patient's system.
662479
that depends upon wheather you are going to design experiments for bulk product aspirin or formulations like aspirin tablets.\nfor bulk products tests like melting point, assay(percentage purity), solubility testing .... etc,.\nif that is a tablet you have to proceed with release rate, tablet weight, frightness test,etc.....
1102382
You can dissolve it in water. Upto 7.4 g dissolves in 100 mL of water.  This solution will be acidic.
731182
recently there was a nes article in "the times of India" daily paper,\nthat the ingtriedients are not uniformly distributed in a tablet and the main medicine is mixed with binding agents, so breaking a tablet into two or grinding it into powder form does not reduces the dose concentration(i.e. gm per volume)rather in some cases like ibrufane , it can be harmful to intake broken tablet.\nbetter consult a doctor
365195
it is how much is  able to dissolve in the solute(the substance being dissolved)solvent(the "dissolver"), for example, the solubility of sugar(solute) in a liquid(solvent) is a certain rate..hope it wuz helpful
851633
Stirring during refluxing will maintain the solution that is being heated. It will dissolve any solid particles into the solution and prevent and layers from being formed in the solution between liquids with different densities. It will also guarantee that the solution is being completely heated and that you're not burning the bottom of the solution.
616785
Also, it doesn't mix with water, so it doesn't dissolve. Alcohol is lighter than water too, but it doesn't float, it dissolves.
799604
If the ionic compound is soluble, no precipitate is formed.\n\nOn the other-hand, if an ionic compound is not very soluble in the solvent, then it will precipitate out of solution.\n\nFor example, Sodium chloride is soluble and Silver nitrate is soluble, but if these solutions are mixed, some of the Silver ions will react with chloride ions and form solid Silver chloride precipitate.
409824
When what is mixed is not fully disolved into the liquid medium.  It usually settles.  A cenrifuge will not separate out the components that are not part of the solution.
838309
b a solution, the salt will dissolve