Questions 1. Consider the statement, \"In the following process, the number of p
ID: 702913 • Letter: Q
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Questions 1. Consider the statement, "In the following process, the number of particles increases, so AS for this process is positive". MgS(s) Mg*(aq) + S2(aq) 2. 3. 4. Is this statement true? Explain your answer. Look at the solubility guidelines below. Which of these are observable in your data? When a precipitate forms, do any of the ions involved in the precipitate stay in solution? Look up the solubility in g/100 g of water for silver sulfate (https://en.wikipedia.org/wiki/Solubility table) and follow the following steps Write a balanced reaction for dissolving silver sulfate in water. (Note that water is not a reactant here, it is just present to solvate the ions) a. b. Determine the concentration of each ion in a saturated solution (in molarity). You will want to use the solubility value you looked up and the molar mass. It's important to pay attention to the volume of water. Use the equilibrium concentrations to calculate K for this reaction at 20 °C (sometimes specified as Ksp, or solubility product) If you mix equal volumes of 1 M silver nitrate and 1 M sodium sulfate, silver sulfate precipitates. If you mix equal volumes of 0.01 M silver nitrate and 0.01 M sodium sulfate, nothing precipitates. Use your answer to part (c) above to justify why precipitation happens at some concentrations and not at others c. d. Solubility Guidelines Soluble Ionic Compounds 1. Group 1A(1) ions (Li*, Na*, K*, etc.) and mmonium (NH4') 2. NO,CH CO,, and Clo 3. CI , Br , I except with Ag, Pb2.cu", and Hg22+ 4. SO4 except with Ca2*, Sr2+, Agt, and Pb2* Insoluble Ionic Compounds 1 . OH except with Group 1 A(1), NH,+, and larger Group 2A(2)(beginning with Ca2+) 2. CO 2-except with Group 1A(1) and NH4+ 3. S2 except with Group IA(1) and NH 4. C2O42 except with Group 1A(1), and NH4'. 5. PO except with Group 1A(1) beginning with Na*, and NH4-.Explanation / Answer
Ans 1 :
Yes this statement is absolutely true.
Entropy is the degree of randomness or disorderness of the system.
The reaction produces 2 moles of ions per one mole of solid MgS compound. Since the number of particles increase in the reaction , randomness increase , which increases the entropy. So the entropy change of the reaction is positive.
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