Aim
To carry on an experiments to find solubility of ionic compounds in different solute-solute and solvent solute interactions.
Description
We will be blending ionic compounds in solute-solute and solvent solute interactions. We will be uniting Na. K. Ca. Mg. Cu. Fe. Ni and Ag and some anions like chloride. sulphate. nitrate. oxalate. phosphate. and hydroxide. We will be seeing which one forms a precipitate or rings. Most likely the anions will be the indissoluble. From there we will be doing a flow chart that will travel consequently to our experiment.
Materials
Test tubing or containers to blend compounds. Anions reagents. Cation reagents
Safety
Wear goggles. Follow teachers regulations at all times. Don’t eat anything or imbibe. no Equus caballus playing in the lab
Pre Lab Questions
1. Salts of higher valency cations ( 2+ or higher ) are indissoluble. unless they are chlorides or nitrates. Cations of +1 charge are soluble. except for Ag. However. Ag nitrates are soluble. Hydroxide salts of cations of
+3 charge or higher are indissoluble. except at low pH.
2. Precipitate is formed when substance is indissoluble. The solubility regulations determine whether a substance is soluble or indissoluble.
3. You can forestall precipitates by following the solubility regulations. Most indissoluble contain Ag. Pb. Cu. Hg
4. Some factors that can do precipitates more soluble is heating. stirring. or merely adding more solvent.
5. Yes. the size of the crystal has a immense impact on the solubility procedure. For illustration the bigger the crystal the more clip it would take to fade out. It would besides take more heat. more rousing and more lolvent for the crystal to wholly fade out.
6. Any solution with a pH of 7 and higher is an alkalic solution. Besides you look to see if any of the group one base metals are included in the solution.
7. Most salts are soluble nevertheless the degree of solubility is based on the Ksp values. The higher the value of Ksp the more soluble the salt is. Oron ( II ) hydrated oxide is indissoluble and the Ksp is 2. 5*10^-37. Cadium hydrated oxide is indissoluble and the Ksp is 5. 3*10^-15.
Procedure
Topographic point 3-5 beads of each compound is assorted with equal sums of each one of the other staying compounds. Record the observations made from the reactions.
Unknown: Topographic point 3-5 beads of the unknown compound mixed in a trial tubing with equal sums of one of the staying compounds in. record observations. Repeat until the unknown compound has been mixed with each of the other compounds.
