TE l 48% 7:38 PMNFCINSTITUT UNIVERSITAIRESIANTOUUNIVERSITY INSTITUTEGeneral chemistry problem setL'Ecole des MajorsAnswer all the questionsТopic: Mole сoncept1. Consider the equation2KOH + H2SO4 → K2SO4 + 2H2Oa) If 25g H2SO4 is reacted with 7.7g KOH, how many grams of K2SO4 are produced?b) For part (a) of this problem, identify the limiting reactant and calculate the mass of excess reactant thatremains after the reaction is completed.c) Calculate the theoretical yield of the reaction. How many grams of material would you expect to obtain if thereaction has a 47.2% yield?2. Phenol, commonly known as carbolic acid, was used by Joseph Lister as an antiseptic for surgery in 1865. Itsprincipal use today is in the manufacture of phenolic resins and plastics. Combustion of 5.23 mg of phenol yields14.67 mg CO2 and 3.01 mg H2O. Phenol contains only C, H, and O. What is the per-centage of each element inthis substance?3. Adipic acid is used in the manufacture of nylon. The composition of the acid is 49.3% C, 6.9% H, and 43.8%O (by mass), and the molecular mass is 146 amu. What is the mole-cular formula?Topic: Chemical kinetics4. Hydrogen sulfide is oxidized by chlorine in aqueous solution.H2S(aq) Cl2(aq)→ S(s) 2HC1(aq)The experimental rate law isRate = k[H2S][Cl2]What is the reaction order with respect to H2S? with respect toCl2? What is the overall order?5. The following data were collected for the reaction A(g) + B(g)→ Products.Еxperiment[A]o (M)[B], (M)Rate (M/s)10.01000.1001.0 x 10–030.03003.0 × 10–030.1000.03000.3002.7 × 10–02a) Determine the rate law for this reaction.b) Calculate the rate constant.c) Calculate the rate when [A] 0.200 M and [B] 0.200 M.6. A reaction of the form aA → Products is second order with a half-life of 425 s. What is the rate constant of thereaction if the initial concentration of A is 5.99 x 10³ mol/L?7. The following values of the rate constant were obtained for the decomposition of nitrogen dioxide at varioustemperatures. Plot the logarithm of k versus 1/T and from the graph obtain the energy of activation.Тетрerature ( C)k (L/mol s)3200.527 LTE 47% 7:36 PMNFCЕxperiment[A]o (M)[B], (M)Rate (M/s)10.01000.1001.0 x 10–030.03003.0 × 10–030.1000.03000.3002.7 × 10–02a) Determine the rate law for this reaction.b) Calculate the rate constant.c) Calculate the rate when [A] 0.200 M and [B] 0.200 M.6. A reaction of the form aA → Products is second order with a half-life of 425 s. What is the rate constant of thereaction if the initial concentration of A is 5.99 x 10³ mol/L?7. The following values of the rate constant were obtained for the decomposition of nitrogen dioxide at varioustemperatures. Plot the logarithm of k versus 1/T and from the graph obtain the energy of activation.Тетрerature ( С)k (L/mol s)3200.5273300.7763401.1213501.607Topic: Nuclear chemistry8. Complete the following nuclear reactions.a. 14Sib. STi + ?isP + ?2Sc» 36BA + ? + 4on1544,2244.>142c. Cf252,989. Consider Rn-222a. Predict the type of radioactive decay that Rn-222 is most likely to undergo.b. Write the equation for the decay process.c. The half-life of Rn-222 is 3.82 days. If you start with a 150.0-g sample of Rn-222, how much remains after15.0 days?EndI RecommendedShareExtract PagesPicture SharingPDF AnnotationL--

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1. Consider the equation 2KOH + H2SO4 → K2SO4 + 2H2O a) If 25g H2SO4 is reacted with 7.7g KOH, how many grams of K2SO4 are produced? b) For part (a) of this problem, identify the limiting reactant and calculate the mass of excess reactant that remains after the reaction is completed. c) Calculate the theoretical yield of the reaction. How many grams of material would you expect to obtain if the reaction has a 47.2% yield?

1. Consider the equation 2KOH + H2SO4 → K2SO4 + 2H2O a) If 25g H2SO4 is reacted with 7.7g KOH, how many grams of K2SO4 are produced? b) For part (a) of this problem, identify the limiting reactant and calculate the mass of excess reactant that remains after the reaction is completed. c) Calculate the theoretical yield of the reaction. How many grams of material would you expect to obtain if the reaction has a 47.2% yield?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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