Circle the questions that are to be answered. Part A.2. Suppose some of the soli

Question

Circle the questions that are to be answered. Part A.2. Suppose some of the solid calcium hydroxide is inadvertently transferred along with the supernatant liquid for analysis. Will more, less, or the same amount of hydrochloric acid titrant be used for the analysis in Part A.6? Explain. Will this inadvertent transfer increase, decrease, or have no effect on the calculated solubility product for calcium hydroxide? Explain. Will this inadvertent transfer increase, decrease, or have no effect on the calculated molar solubility of calcium hydroxide? Explain. Part A.6. Does adding boiled, deionized water to the titrating flask to wash the wall of the Erlenmeyer flask and the buret tip increase, decrease, or have no effect on the K_sp value of the Ca(OH)_2? Explain. Part A.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.

Explanation / Answer

(1)

(a) It does not effect the required concentration of HCl. Because once saturation is reached addition of exctra clcium hydroxide does not get dissolved.

(b) No effect. Kap is conctant at given temperature.

(c) no effect. Because at a given temperature solubility is constant.

(3) It means that we used extra amount of HCl than required. Hence it gives high concentration of calcium hdroxide and thus its solubility.

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