Question

Suppose some of the solid calcium hydroxide is inadvertently transferred along with the supernatant liquid for analysis. a.Will more. less, or the same amount of hydrochloric acid titrant be used for the analysis in .6? Explain. b.Will this inadvertent transfer increase, decrease, or have no effect on the calculated solubility product for calcium hydroxide? Explain. c.Will this inadvertent transfer increase, decrease, or have no effect on the calculated molar solubility of calcium hydroxide? Explain. 2. .6 Does adding beiled, deionized water to the titrating flask to wash the wall of the Erlenmeyer flask and the buret lip increase, decrease, or have no effect on the K_sp value of the Ca(OH)_2? Explain. 3. .6. While titrating the saturated Ca(OH)_2 solution. Isabella was distracted, and the endpoint was surpassed-a dark red-orange. As a result of this technique error, will the reported molar solubility of Ca(OH)_2 be too high or too low? Explain. 4. Part B.I. How will using tap water instead of beiled, deionized water affect the K^value of Ca(OH)2-increase, decrease, or have no effect? Explain. 5. 8 Jeny forgo! to record the actual molar concentration of the standard HCI solution (which was actually 0.044 M). I lowcvcr. to complete ihe calculations quickly, the -0.05 M concentration was used. Will the reported molar solubility of Ca(OH)_2 he too high or too low? Explain.

Answer 1

a. First dissolved Ca(OH)_2 will react with HCl, Then solid Ca(OH)_2 will start to dissolve and consume more HCl more HCl b) Solubility Product it will not affect the solubility product Ca(OH)_2 doubleheadarrow Ca^2+ + 2OH^- equilibrium will be maintained K_sp = [Ca^2+] [2OH^-]^2 rightarrow molar solubility of OH. c) No effect molar solubility will be too high acid consumption = base (Ca(OH)2 higher the consumption higher will be base surpass leads to excess addition of acid The less amount of acid only consumed, thus less molar solubility