I want Q1 (i) and (ii) Q1 (a) Read the following sentences carefully and briefly justify the answer:(i)Combustion of Benzene produces carbon rich sooty flame.(ii)Standard Hydrogen Electrode (SHE) is used to measurestandard potential of electrodes.(ii)Water boiling in a steel bowl is an open thermodynamic system.(iv)22.4 liter O2 gas at STP will have 6.023x1023 O2 molecules.Q2 (a) Explain why KCI is an ideal salt to be used in salt bridge.(b) Draw and describe the Cu-Zn electrochemical cell with both half-cellreactions.(c) Why the IUPAC name of C2H6 is Ethane?(d) Consider a mixture of 2g NaCl and 4g KCI. Calculate mole fraction ofboth species.(e) Differentiate between H3PO, and H2C2O4.Q3 (a) Determine the mass of Al2(SO.)3 required to prepare 0.01N solution in

Aromatic compounds are those compounds which have a cyclic conjugation, are planar and obey Huckel's…

Answered: (i) Combustion of Benzene produces…

(i) Combustion of Benzene produces carbon rich sooty flame. Standard Hydrogen Electrode (SHE) is used to measure standard potential of electrodes. (ii)

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...

See similar textbooks

Similar questions

Read the following sentences carefully and briefly justify the answer: (i) Combustion of Benzene produces carbon rich sooty flame. (ii) Standard Hydrogen Electrode (SHE) is used to measure standard potential of electrodes. (ii) Water boiling in a steel bowl is an open thermodynamic system. (iv) 22.4 liter O2 gas at STP will have 6.023x1023 O2 molecules.
(a) An ideal gas of mass 4.5 g and molar mass of 17 g.mole-1 occupies 12.7 L at 310 K. Answer the following questions based on the conditions presented. (i) Calculate the work done under a constant external pressure of 30 kPa until the volume of gas has increased by 3.3 L. (ii) Calculate the work done in an isothermal and reversible expansion process resulting in a final volume of 16L. (iii) If the gas has a molar heat capacity of 30.8 J.mol-1.K-1 and is subjected to a constant volume process until it reaches a temperature of 350K, calculate the heat transfer in kJ.mol-1 of the gas. (b) Calculate the standard enthalpy of formation of N2O5 (g) from N2 (g) and O2 (g), in kJ. mol-1, from the following data: 2NO(g) + O2(g) ® 2NO2(g) DH = -114.1 kJ 4NO2(g) + O2(g) ® 2N2O5(g) DH = -110.2 kJ N2(g) + O2(g) ® 2NO(g) DH = +180.5 kJ
6. When the ideal-gas reaction A+B=C+Dhas reached equilibrium, state whether or not each of the following relations must be true. Here n¡ is the number of moles of species i in equilibrium, P, is the partial pressure of i, and µ; is the chemical potential of i. Here a simple True or False answer is sufficient. (a) nc+np=nA +ng (b) Pc+Pp=PA+PB (c) na=ng (d) nc=na (e) If only A and B are present initially, then nc=np (f) Ha + HB= Hc+ Hp no matter what the initial composition. (g) If only A and B are present initially, then in equilibrium we must have nc # 0. (h) The equilibrium constant Kp(T)= PĄPB/(PcPp). (i) The value of –RT In Kp(T) = µE(T)+µ8(T)– H3(T) –- H§(T). ) The equilibrium constant is independent of the total pressure.
The emission of NO, by fossil fuel combustion can be prevented by injecting gaseous urea into the combustion mixture. The urea reduces NO (which oxidizes in air to form NO2) according to the reaction: 2 CO(NH;)»(3) + 4 NO(3) + O2(8) 4 Na(8) + 2 CO;(g) + 4 H¿O(g) Suppose that the exhaust stream of an automobile has a flow rate of 2.55 L/s at 655 Kand contains a partial pressure of NO of 12.4 torr. What total mass of urea is necessary to react complete- ly with the NO formed during 8.0 hours of driving?
(b) A motor car tyre contained a fixed mass of air at 27 °C. Its pressure was 220 k Nm-4 abe atmospheric pressure. After a 60-minute drive, the air pressure rose to 250 k Nm-2 above atmospheric pressure. What was the new temperature of the air in the tyre, in degrees Celsius, if the volume of air remained constant? Note: (Atmospheric pressure = 100 k N m-2)
calculate the standard enthalpy for the reaction 2no2 -> n2o4 at 65 degree celcuid
(b) (i) Mixtures of molten salts often result in high excess mixing enthalpies. Calorimetric experiments of a 25:75 mixture of NaCl and KCl revealed an enthalpy of mixing ΔmixH of -0.4095 kJ mol-1 . Calculate β for this mixture. (ii) Aluminium boils at 2737 K at 100.0 kPa pressure. Given that at 100.0 kPa the molar heat capacity (Cp) of liquid aluminium is 29.30 J K-1 mol-1 , and of aluminium gas is 20.79 J K-1 mol-1 , calculate the total entropy change for the reaction: Al(liquid, 2000 K) → Al (gas, 3500 K). ΔvapS = 49.24 J K-1 mol-1
(a) For liquid benzene β = 9.30 x 10-5 atm-1 at 20 °C and 1 atm pressure. Utilizing the equation derived ln(v2/v1)=α(T2-T1)-β(P2-P1) and assuming β to be independent of pressure, find the percentage change in volume of a sample of benzene on being compressed at constant temperature from a pressure of 1 atm to a pressure of 11 atm. (b) What would be the percentage change in volume of an ideal gas compressed over the same pressure interval at constant temperature?
In biological cells that have a plentiful supply of oxygen, glucose is oxidized completely to CO2 and H2O by a process called aerobic oxidation. Muscle cells may be deprived of O2 during vigorous exercise and, in that case, one molecule of glucose is converted to two molecules of lactic acid (CH3CH(OH)COOH) by a process called anaerobic glycolysis. (a) When 0.3212 g of glucose was burned at 298 K in a bomb calorimeter of calorimeter constant 641 J K−1 the temperature rose by 7.793 K. Calculate (i) the standard molar enthalpy of combustion, (ii) the standard internal energy of combustion, and (iii) the standard enthalpy of formation of glucose. (b) What is the biological advantage (in kilojoules per mole of energy released as heat) of complete aerobic oxidation compared with anaerobic glycolysis to lactic acid?
(a) (c) HO OH 1. BH3 2. H₂O₂, NaOH 3. PCC 4. CH3MgBr 5. H3O+ workup Na₂Cr₂O7 H₂SO4, H₂O
(2) The Gibbs function G is (GF) ₁ P == ound ·S (06), = relationship (25) a = -(=++) ₂ thu modynamic property. If =V, prove the following
Calculate (a) the (molar) Gibbs energy of mixing, (b) the(molar) entropy of mixing when the two major componentsof air (nitrogen and oxygen) are mixed to form air at 298 K.The mole fractions of N2 and 0 2 are 0.78 and 0.22. respectively. (c) Is the mixing spontaneous?