If you are willing to answer this could you please NOT put it on regular paper and take a photo with phone because none of us students can read it from so far away on your bed sheets..... and please show all your work. They only give us so many questions we can ask.
Will a precipitate form if 0.200 M Pb(NO3)(aq) is mixed with 0.0250 M NaBr(aq)? Explain why precipitates form and what rules help guide your answers?
Reaction equation: Pb(NO3)(aq) + 2NaBr(aq) ------------>PbBr2(s) + 2NaNO3(aq) Ksp = 4.67x10-6
![A precipitate will be formed if the Q values exceeds the Ksp of the solid. Ksp for PbBr2 = 4.67 *10-6 conc. of Pb+2 = [Pb+2]](http://img.homeworklib.com/questions/d9e889e0-dd08-11eb-9b6b-4f8ccd670d5e.png?x-oss-process=image/resize,w_560)
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During your lab on pigments, another group mixed the following chemicals in their attempt to form a new precipitate Hg2(NO3)2 (aq) Pb(NO3)2 (aq) and Ba(NO3)2 (aq). Nothing happened. SO they added (yes, to the mixture that already had three chemicals!) another chemical: NaBr (aq). A precipitate formed. What was it? a) Hg2Br2 b) PbBr2 c) BaBr2 d) Two of the above e) All three of the above
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Fall 2019 NAME: Test No. 8. (8) What volume of 0.562 M HCI is required to titrate 36.8 ml. of 0.386 M Ba(OH)2? 9. (12') When you mix 25.0 mL of 0.225 M Pb(NO3)2 with 35.0 mL of 0.148 M KaS, a precipitate will form. (aq)+ K2S (aq) - PbS (s)+2 KNO (aq) Pb(NOs)2 How many moles of precipitate will form? b. What is the theoretical yield of the reaction? How many grams of precipitate can...
to answer number 28. you refer back to 24. but im stuck on it
ans confused.
2NaC1 HOH c. + MgC12 + H2S04> Na2S04+2HCI d. Ca(OH)2+ Pb(NO3)2> Ca(NO3)2 + Pb(OH)2 3 parts) What is the H+ concentration and pH of a 0.20 M solution of hypochlorous acid, Ka 3.5 x 10*? (SHOW ALL STEPS FOR CR CONC. AND SOLVE FOR 22.pH ) 20. ICE CHART, sOLVE FOR 21 23. What is the hydroxide ion concentration and pH of a 0.10...
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What would be the final Cu^+ concentration in a solution that is originally 0.10 M in both Cu^+ and Pb^2+, such that the minimum I^- concentration is present to just precipitate both Cut and Pbl2? KsP (Cul) = 5.1 Times 10^-12 and KsP (Pbl2) = 1.4 Times 10^-8
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this question. the correct answer is D. thanks.
i am asking for Q 2. sorry for many pictures.
Questions 1& 2 refer to the solubility of lead chromate, PbCrO4 PbCrO4(s) Pb (aq) CrO4(aq) 2+ The Ksp for PbCrO4 is 2.0 x 1016 at 25 °C. What is the solubility of PbCrO4 in mol L1? 1. a) 1.4 x 108 b) 2.8 x 108 c) 2.0 x 10-16 d) 7.1 x...
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13. The net ionic equation for the reaction between aqueous solutions of HF and KOH is b. HF(aq) + OH-(aq)→ H2O() + F-(aq) H+(aq) + K+(aq) + Он'(aq) F(aq) + H2O() + K+(aq) + F(ag) e. 14. Based on the solubility rules, which of the following will occur if solutions of Cus0.(aq) and BaC2(aq) are mixed? a. CuCl2 will precipitate; Ba2 and SO- are spectator ions. b. CuSO4 will precipitate;...
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Questions 1 & 2 refer to the solubility of lead chromate, PbCr04: PbCrO4(s) = Pb2+(aq) + Cro4? (aq) 1. The Ksp for PbCrO4 is 2.0 x 10-16 at 25 °C. What is the solubility of PbCr04 in mol L´?? a) 1.4 x 10-8 b) 2.8 x 10-8 c)2.0 x 10-16 d) 7.1 x 107 e) 5.0 x 1015 2. If 5.0 mL of 1.0 x 10-M Pb(NO3)2 is added...
the
questions, please.
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Report Sheet Reactions in Aqueous Solutions: Metathesis Reactions and Net Tonle Equations 2. Crystal shape_ Needles 3. Identity of crystals 4. Temperature of filtrate 52°C 5. Crystal shape of second batch 6. Identity of second batch of crystals 7. Crystal shape of third batch 8. Identity of third batch of crystals QUESTIONS Y. Which of the following reactions are metathesis reactions? (a) 2KCIO, — 2KCI +302 (b) Cu(NO3)2 + Zn — Cu + Zn(NO)2 (c)...
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Section Results Testing the Solubility Rules and Reaction of Precipitates with HCI Column A Column B Na2SO4 NaBr Column NH.NO, No reaction no reaction NaOH ColumnD Na.co. no reaction no reaction Ba(NO)2 No reaction reaction no reaction reaction AgNO reaction no reaction reaction reaction Pb(NO3)2 no reaction reaction no reaction reaction NI(NO3)2 no reaction no reaction reaction reaction Unknown Treaction reaction no reaction reaction All compounds used in...
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1) of the reactions below, which one is a decomposition reaction? A) Ca(NO3)2 + Na2S -- CdS +2NaNO3 B) NH4Cl- NH3 + HCI C) 2Mg + 02 - 2MgO D) 2N2 + 3H2 → 2NH3 E) 2CH4 + 402 - 2002 + 4H20 miches of - x 1? 2 2) Calculate the percentage by mass of ammonia in cisplatin, PtCl2/NH3 12. A) 12.53 B) 5.68 C) 18.09 D) 11.35 E) 4.67 3)...