Can you please explain question 29? Thank you! :) A) Additional precipitate No v
ID: 567669 • Letter: C
Question
Can you please explain question 29?Thank you! :) A) Additional precipitate No visible reaction eccurs (B) No visible reaction (C) No visible D) Addition e he ally, but Gas is produced, occurs e leaction Precipitate ded, and al precipitate Gas is produced, and occurs precipitate dissclves on No visible reaction accurs forms. precipitate dissolves Multiple Choice 21. The concentration of iodide ions in a saturated solution of lead (II) iodide is solubility product constant of Pblz is 1.4x 108. a, 3.8x10-4 (D. 3.0 x 103c. I.5x103 d.3.5x10, e. 1.4 x 108 D 22. The solubility of lead (II) chloride (PbClh) is 1.6x 102 M. What is the Kp off a. 5.0 × 104 b. 4.1x 10" c. 3.1 x 107 1.6 x 105 1)2 )2 )2 e. 1.6× 102 23. What is the molar solubility of magnesium carbonate (MgCO,) in water? Th constant for MgCOs is 3.5 x 103 at 25°C. a. 1.8 × 10-8 b. 7.0 × 108 c. 7.46 d. 2.6x104 Q 1.9x10" roup D24. What is the solubility (in M) of PbCh in a 0.15 M solution of HCI? The Kip of a. 2.0× 103 b. 1.1 × 104 c. 1.8x 104 . 7.1 x 104 e. 1.6 x 10s The Ksp for Zn(OH): is 5.0× 10". Determine the molar solubility of Zn(OH); pH of 11.5 a. 5.0× 10° b. 1.2x1012 c. 1.6× 1014 5.0 x 1012 e. 5.0 x 1017 25. uric n o Lin n which of the following aqueous solutions would you expect AgCI to have th a, pure water 0.020 M BaCl2 c. 0.015 NaCI d. 0.020 AgNOs e. 0.020 K tion 26. I 0.181 M HCI 0.0.0176 M NH, c. 0.744 M LiNO, d. pure water to.181 a. Al(OH)s Cal(OH)2 c. Cr(OH) d. Zn(OH)2 e. Sn(OH) For which salt should the aqueous solubility be most sensitive to ph? B 27. In which one of the following solutions is silver chloride the most soluble? d28. Which one of the following is not amphoteric? ns B. 29. a. Ca(NO,) & CaF2 c. CaClz d. CaBr e. Cal
Explanation / Answer
CaF2 is more sensitive because the conjugate ion F- is conjugate base of weak acid of HF whereas NO3- , Cl- , Br- , I-
Are conjugate base of strong acid and it makes CaF2 more sensitive.
Here F- is more stable than other ions given in the question.
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