Write the chemical equation foe the dissolution of calcium hydroxide in water, a
ID: 1052888 • Letter: W
Question
Write the chemical equation foe the dissolution of calcium hydroxide in water, and write its corresponding K_sp equilibrium expression Write the balanced chemical equation for, the reaction of HCI with calcium hydroxide, which yields water and ealc.um chloride During the experiment. 25 00 ml of calcium hydroxide solution was titrated with 5.50 ml of 0.102 M HCI Determine the mass of calcium hydroxide (in grams) used in the titration based on the data provided. Determine the solubility of the calcium hydroxide in 25 00 ml based on your answer to Part A. Determine the K_sp for calcium hydroxide based on the data provided. The literature value for the K_sp, of calcium hydroxide is 7.90 times 10^-5 Calculate the % error for the data collected. The equation below can be used to determine the enthalpy and entropy change for the solubility of the calcium hydroxide. In K = (- delta H degree/R) 1/T + delta S degree/R if a plot of In K_sp vs 1/T produces a slope of +1.875 K and a y intercept of -18 5. calculate the values of both delta H degree (in kJ/mol) and delta S degree (in J/K-mol). Use your value of K from question 3d and R = 8.314 J/K-mol for the calculations.Explanation / Answer
1)
Ca(OH)2 (s) <----> Ca2+ (aq) + 2OH- (aq)
Keq = [Ca2+] [OH-]^2
2)
2HCl (aq) + Ca(OH)2 (aq) <---> CaCl2(aq) + 2H2O (l)
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