I plan to have 4 separate distilled water samples. And then I would add Cu to 1
ID: 1009838 • Letter: I
Question
I plan to have 4 separate distilled water samples. And then I would add Cu to 1 sample, Cr to another, Cd to another and Pb to the last one. I plan to make a synthetic wastewater with only these metals.
1. Would I just add these metals to the water?
2. How would I add these metals to the water?
3. How do I control the conditions such as the pH level?
4. What are the materials and laboratory equipment needed to do this process?
5. How much of metal should be placed in the water? Like in ppm or some other units.
Explanation / Answer
If we decrease the volume of the reaction chamber. To the right. This reaction deals with gases! So decreasing the volume changes the pressure (raises the pressure). We have more moles of gas on the reactants side (3 moles) than on the products side (2 moles). A change in pressure will be cubed for the reactants but only squared for the products. The reaction forwards towards to products to relieve some of the pressure off of the reactants. 3 If we lower the temperature by removing heat from the reaction chamber. To the right. The process is exothermic, and we could think of heat as a product. The true reason the reaction shifts is because the equilibrium condition actually changes. The value of K increases with decreasing T in this exothermic case. The result is a shift to reactants because the reactant/product concentrations change to fit this new equilibrium condition (increasing K means more products), not that the heat is actually a product. Either way you think about it, removing the heat product will drive the reaction forward to the right. B. PbCl2 (s) Pb2+ (aq) + 2Cl-(aq) (This process is ENDOTHERMIC) .