Unsaturated solutions?

Question

The solubility of MnSO4 H2O in water at 20 degrees C is 70g per 100mL of water.

Given a solution of MnSO4 H2O of unknown concentration, what experiment could you perform to determine whether the new solution is saturated, supersaturated, or unsaturated?

Answer 1

There are a couple of possibilities. The easiest would be to take some of the solution and add a small crystal of MgSO4 to it. If it dissolves, the solution was unsaturated. If it doesn't dissolve, then the solution was probably saturated. If the solution had been supersaturated, adding a crystal to it will cause the excess solute to come crashing out of the solution, so you'd see the formation of a lot of insoluble stuff.

Answer 2

You must understand the definitions of "saturated" before any of that will make sense to you. Do you?

"Saturated" implies that the solution contains as much solute as possible in solution before it starts coming out of solution (i.e. precipitating, gassing out, whatever - depending on the solute).

So if you add, say 100 g of MnSO4.H2O to 100 mL of water at room temperature, what do you expect to see? The result is due to saturation....

What then if you raised the temperature of the solution, what would you expect to see? The result would be supersaturation...

I have just given you the "puzzle pieces" to answer your own question. You might want to try cracking open your chemistry text and investigating these closely. Your answers should quickly and easily follow.

For more help, look up "Solubility" , or "Solubility Product" in your text's index.

Answer 3

to understand what those are, you ought to understand that a solvent is the section that does the dissolving (in many cases water, a.ok.a. the customary solvent), and a solute is the section that's being dissolved (alongside with salts, sugars, acids, and bases). For all recommendations the solute must be extra to the solvent, no longer any incorrect way around. enormously with acids and bases, this could reason some severe issues. a million. An unsaturated answer is a answer that could dissolve greater solute without changing any of the present circumstances (alongside with temperature), and there will be no seen unsaturated solute (e.g. you won't be able to work out the salt on the backside of the cup and you will dissolve greater salt with no need to warmth the water.) 2. A saturated answer is a answer that has reached its optimal solute load. it won't be able to saturate from now on, and you're able to or will possibly no longer see some greater solute floating around, per no rely in case you extra greater beneficial than the solvent ought to dissolve or no longer. 3. A supersaturated answer is a answer that has been altered (in many cases heated) as a fashion to dissolve greater solute than it could have the ability to below widespread circumstances. the desire be no undissolved solute recent.