ghing out an accurate amount of solid sodium hydroxideand dissolving it in a known volume of water?5. If magnesium hydroxide were used instead of NaOH, how many moleswould it take to combine with three moles of KHP? Explain.6. A 0.4622-g sample of potassium hydrogen phthalate was dissolved in 50mL of deionized water and titrated to a phenolphthalein end-point with19.48 mL of NaOH solution. What is the molarity of the NaOH?o7. Assuming that the density of vinegar is 1.012 g/mL, calculate the weightpercent of acetic acid in vinegar if 23.85 mL of 0.1311 M NaOH wasrequired to titrate 5.00 mL of vinegar.noitreaction and dissociatrs bios olisos to dne hsq 2sm oqetb s sbubni A.2nileblu lnbotsrds nidslw.29ituoibidnembeqxins bns2e lo asSo(E. 4)uphnolto n92rt onithsie sted qid ierud srdt i asiddud tis svome of ballst inedno62slddud his edd cnolienird douon t Vsisbbeakcut asw ql erd brsoldoloe HOsbluoWed dnslom HOO oisiqxB 1ipid ood 1o wo9U2MGE6.ABbreb1UOY.Sd bezu yillsdnbbos inedesinol & esdTrt bluowulo HOsM9rd3 to vihelom ert nmishot noldsiuolso erd no evsiS 28:8919HM to osoient .anoionYICno1019WT H0 0 nislqx45

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Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter4: Acids And Bases

Section: Chapter Questions

Problem 4.43AP

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If 55 mg of lead(II) sulfate is placed in 250 mL of pure water, does all of it dissolve? If not, how much dissolves?
The Handbook of Chemistry and Physics (http://openstaxcollege.org/l/16Handbook) gives solubilities of the following compounds in grams per 100 mL of water. Because these compounds are only slightly soluble, assume that the volume does not change on dissolution and calculate the solubility product for each. (a) BaSeO4, 0.0118 g/100 mL. (b) Ba(BrO3)2H2O, 0.30 g/100 mL. (c) NH4MgAsO46H2O, 0.033 g/100 mL. (d) La2(MoO4)3, 0.00179 g/100 mL
Tris(pentatluorophenyl)borane, commonly known by its aeronym BARF, is frequently used to initiate polymerization of ethylene or propylene in the presence of a catalytic transition metal compound. It is composed solely of C, F, and B; it is 42.23% C and 55.66% F by mass. a. What is the empirical formula of BARF? b. A 2.251-g sample of BARF dissolved in 347.0 mL of solution produces a 0.01267-M solution. What is the molecular formula of BARF?
a. A 1.00 liter solution contains 0.45 moles nitrous acid and 0.35 moles potassium nitrite .If 0.17 moles of hydroiodic acid are added to this system, indicate whether the following statements are true or false.(Assume that the volume does not change upon the addition of hydroiodic acid.) A. The number of moles of HNO2 will decrease. B. The number of moles of NO2- will decrease. C. The equilibrium concentration of H3O+ will remain the same. D. The pH will increase. E. The ratio of [HNO2] / [NO2-] will increase. b. A 1.00 liter solution contains 0.38 M ammonia and 0.49 M ammonium bromide. If 0.120 moles of barium hydroxide are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of barium hydroxide.) A. The number of moles of NH3 will decrease. B. The number of moles of NH4+ will decrease. C. The equilibrium concentration of H3O+ will increase. D. The pH will increase. E. The ratio of [NH3] /…
2. Suppose your laboratory instructor inadvertently gave you a sample of KHP contaminated with NaCl to use in standardizing your NaOH. How would this affect the molarity you calculated for your NaOH solu- tion? Justify your answer.
10. A 0.514 gram sample of NazCO, (106.0 g/mol) was dissolved in distilled water in a 100.0 mi volumetric flask. The molar concentration of Na,CO, in solution is: 0.0485 M 0.0370 M b. 0.4849 M 0.0340 M 0.0330 M d. е.
A 1.00 liter solution contains 0.60 moles nitrous acid and 0.46 moles potassium nitrite .If 0.23 moles of perchloric acid are added to this system, indicate whether the following statements are true or false.(Assume that the volume does not change upon the addition of perchloric acid.) A. The number of moles of HNO2 will increase. B. The number of moles of NO2- will remain the same. C. The equilibrium concentration of H3O+ will remain the same. D. The pH will increase. E. The ratio of [HNO2] / [NO2-] will increase.
Q5: A sample of 0.676g of an unknown compound containing barium ions (Ba+) is dissolved in water and treated with an excess of NazSO. If the mass of BasO, precipitate formed is 0.4105g. What is the percent by mass of Ba in the original unknown compound? Note: Mwt. of Ba =32, Mwt. of BaSo4 =233, Mwt. of Na2SO4=142
1-Why does silver chloride precipitate before silver chromate in mohr's mathod ? 1:45 PM /
5. Suppose you add too much acid to your milk and the pH drops to 2.0. Would you expect casein to precipitate at that pH level? What is the net charge (positive, negative, or neutral) at that pH?
How much KBr could dissolve in 50 g of H2O at 70ºC?
3.A sample is known to contain NaOH, Na2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCl ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample? ww ww

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