all reversible reactions Kp= 3.5 X 10^4 temp: 1495K N2(g)+3H2(g) reversible 2NH3(g) 1/2N2(g) + 3/2H2(g) reversible NH3(g) what is the value of K at the temp. what is the process for this? please be detailed.

4,540 results
  1. Science/chemistry

    1. Use the reaction, which produces ammonia, to answer the question. N2(g) + 3H2(g) 2NH3(g) Which change would happen in the system if the concentration of N2 was increased at constant pressure? O The reverse reaction would increase in order to increase

  2. Chemistry

    Predict whether the following reactions will be exothermic or endothermic A) N2(g)+ 3H2(g) --> 2NH3(g) B) S(g) +O2(g) ---> SO2(g) C) 2H2O(g) ---->2H2(g) + O2(g) D) 2F(g) +F2(g) Bond H-H 432 kj/mol N-N(triple bond) 942 kj/mol O=O 494 KJ/Mol F-F 155 KJ/mol

  3. Chemistry

    Calculate Delta H for 4NH3 + 5O2 --> 4NO + 6H2O using: N2 +O2 --> 2NO DH= -180.5 kJ N2 + 3H2 --> 2NH3 DH= -91.8 kJ 2H2 + O2 --> 2H2O DH= -483.6 kJ

  4. Chemistry

    Consider the reversible reaction: A(g)-2B(g)At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?

  5. Chemistry

    Calculate Delta H for the reaction CH4(g)+NH3(g)-->HCN(g)+3H2(g) given, N2(g)+3H2(g)->2NH3(g) DeltaH=-91.8kj C(s)+2H2(g)->CH3(g) DeltaH=-74.9kj h2(g)+2C(s)+N2(g)->2HCN(g) DeltaH=270.3kj

  6. Chem

    Why do the rate of reaction for a reversible reaction slows down at equilibrium stage.

  7. chemistry

    The reversible reaction n2(g) + 3h2(g) produces ammonia, which is a fertilizer. At quilibrium, a 1-L flask contains 0.15 mol H2, 0.25 mol N2, and 0.10 mol NH3. Calculate K eq for a reverse reaction? Please HELPP!

  8. Chem

    Which chemical reactions are not possible according to Dalton's atomic theory? CCl4⟶CH4 N2+3H2⟶2NH3 2H2+O2⟶2H2O+Au

  9. chem

    In which situation can Le Chatelier’s principle be applied?(1 point) It can be applied when a reaction happens in a single direction, and environmental conditions are kept constant. It can be applied when a reaction happens in a single direction, and

  10. Chemistry

    What effect do the following changes have on the position of equilibrium (which way does the equilibrium shift) for the reversible endothermic reaction? PCL5+ heat PCL3(g)+ CL2(g) A) removal of PCL3, as it is formed B)addition of CL2 C) decrease in

  11. science

    Which statement about reversible reactions is correct? They always involve gases. The forward and reverse reactions must happen at the same rate.. They can occur in either direction. They are always at equilibrium.

  12. Chemistry

    23. In a chemical reaction, dynamic equilibrium occurs when the rate of the forward reaction becomes precisely equal to the rate of the reverse reaction. All of the following statements are true EXCEPT A. A dynamic equilibrium occurs when the reaction is

  13. Geometry Check please

    Is the following definition of complementary angles reversible? If yes, write it as a true biconditional Complementary angles are two angles whose sum measures to 90 degrees - The statement is not reversible - Yes, if angles are complementary, then their

  14. Chemistry

    1. How many moles of ammonia NH3 are produced when 0.45 moles of nitrogen N2 reacts? N2 + 3H2 yields 2NH3 2. How many mililiters of water will be produced when 2.05 g of hydrogen reacts? The density of water is 1.00 g/mL ? 2H2 + O2 yields 2H2O 3. What is

  15. PLEASE HELP Chem

    Please tell me if these are right. 1.According to Le Chatelier’s principle, what is the effect on the products when N2 is added to the equilibrium mixture of each of the following reactions? a. 2NH3(g) < = > 3H2(g) + N2(g) B. N2(g) + O2(g) 2NO(g) C.

  16. Science

    A reversible heat engine operates with an efficiency of 50%. If during each cycle it rejects 150 cal to a reservoir of heat at 30°C, then what is the temperature of the other reservoir and how much work does it carry out per cycle?

  17. Chem

    Calculate the Keq of the reversible reactions Cr2O7 + 2OH -> CrO4 + H2O and 2CrO42->Cr2O72 , given the following data: HCrO4 -> H + CrO42 K = 3.2 x 10^-7 2HCrO4 -> Cr2O72 + H2O K = 34 H2O -> H+ + OH- K = 1 x 10^-14 HCL and NaOH = 1M KCrO4 and KCr2O7 = 0.1M

  18. chem help!

    Which statement is true about a reaction at equilibrium? A. The reaction is not reversible. B. The reaction concentrations of the reactants and products are always equal. C. The reaction rates of the forward and reverse reaction are always equal. D. The

  19. Chemistry

    Is photosynthesis a reversible reaction?

  20. Geometry

    Is the following definiiton of supplementary reversible? If yes, write it as a true biconditional. Supplementary angles are two angles whose measures sum to 180. a. Yes, if angles are supplementary, the their measures sum to 180. b. Yes, angles are

  21. Chemistry

    Which of the following reactions will result in a reduced total pressure? a. CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) c. 2HI(g) → H2(g) + I2(g) b. 2N2O(g) → 2N2(g) + O2(g) d. 2H2(g) + O2(g) → 2H2O()

  22. Chemistry

    Write the reversible equation for the esterification and hydrolysis of glyceryl ethanoate

  23. Geometry

    1) What are the converse, inverse, and contrapositive of the statement? Which statements are true? If the figure is a rectangle with sides 2 cm and 3 cm, then it has a perimeter of 10cm. My A: the statement is not true. 2) What are the hypothesis and the

  24. Chem-Gas Stoichiometry

    N2+3H2->2NH3 What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia? (assume constant temp. and pressure.)

  25. chemistry

    Given that the normal boiling point of CCl4 is 77 °C, which of the following statements about the process below is/are correct? You may choose more than one, or none, of the statements. CCl4(l, 68 °C, 1 atm) ⟶ CCl4(g, 101 °C, 1 atm) Assume that the

  26. Thermodynamics

    Consider air as an ideal gas with Cp=1000 J/(kg.K), R=287 J/(kg.K) and γ≈1.4. It is compressed from 1 bar, 300K to 10 bar using a compressor. The compressor can be considered adiabatic but not reversible. The flow rate is 2 kg/s, and the entropy

  27. Chemistry

    Given that the normal boiling point of CCl4 is 77 °C, which of the following statements about the process below is/are correct? You may choose more than one, or none, of the statements. CCl4(l, 68 °C, 1 atm) ⟶ CCl4(g, 101 °C, 1 atm) Assume that the

  28. Physical Science

    Calcium oxide and carbon dioxide combine to form calcium carbonate in the reversible reaction: CaO + CO2 ⇌ CaCO3 When the reaction is at dynamic equilibrium, which statement must be true? Calcium carbonate and calcium oxide are formed at the same rate.

  29. high school- chemistry

    Which of the following is NOT necessary for chemical equilibrium? a closed system reactants and products that are the same state of mater the rate of the forward reaction matches the rate of the reverse reaction a reversible chemical reaction

  30. phys

    A reversible engine with an efficiency of 32.0% has TC = 304.0 K. (a) What is TH? (b) How much heat is exhausted for every 0.138 kJ of work done?

  31. chemistry

    The position of equilibrium Z1) is never reached in an irreversible process. Z2) is always reached in a reversible process. Z3) is the same for pure reactants or pure products as starting materials. 1. Z3) only. 2. Z2) only. 3. Z1) and Z2) only. 4. Z1) and

  32. chem

    What volume of ammonia gas will be produced when 6.52 L of hydrogen react completely? 2N2 + 3H2 -> 2NH3

  33. Physics

    A reversible heat engine operates between thermal reservoirs at 1000 K and 290 K. If 8610 J is extracted from the hot reservoir, how much work is done by the heat engine?

  34. thermodynamics

    While the pressure remains constant at 689.5 kpaa the volume of a system of air changes from 0.567 m3 to 0.2283 m3. Determine (a) ΔU, (b) ΔH, (c) Q, (d) ΔS. (e) If the process is nonflow and internally reversible, what is the work? Cp = 0.24Btu/(lbm.°

  35. chemisty

    At 450oC, the equilibrium constant Kc for the Haber-Bosch synthesis of ammonia is 0.16 for the reaction writeten as 3H2(g) + N2 (g)-->--

  36. chemistry

    The "REVERSIBLE" chemical reaction- A + B C + D Kc = CD / AB =4.4 Concentration at the start and after equilibrium- A = 1.00 M --> (1.00 - X) M B = 2.00 M --> (2.00 - X) M C = 0.00 M --> X M D = 0.00 M --> X M 4.4 = X^2 / (1.00-X)(2.00 - X) I'm not sure

  37. Chemistry

    2 moles of ideal gas at 300K, initial volume 25 L, are compressed under an external pressure at 3600 torr. Assuming the temp and the internal energy of gas do not change, what is the entropy change of the gas? (Assume the heat flow is reversible)

  38. Chemistry

    Does a catalyst affect a reversible equation like the kind in my earlier post?

  39. chem

    Calculate delta G, delta A, and delta Stotal for each of the following processes and state any approximations made: (a) Reversible vaporization of 39 g of C6H6 at its normal boiling point of 80.1°C and 1 atm; (b) Adiabatic reversible expansion of 0.100

  40. chemistry

    Which of the following statements is not true? 1.Chemical equilibria are examples of reversible processes. 2.When multiple reaction steps are in equilibrium, then the equilibrium constant for the net reaction is the product of the individual reactions.

  41. thermodynamics and kinetics

    One mole of an ideal gas undergoes an isothermal reversible expansion, doing 1 kJ of work and doubling the volume. What is its final temperature? How much heat was added to the gas?

  42. microbiology

    The diploid character of eukaryotic cells may mask the appearance of a mutation since... A) this may be a frame shift B) the mutation is often reversible C) the mutation may be palindromic D) the matching chromosomes may carry the dominate gene

  43. chemistry

    In equation He +Br2------>2HI why chemical rate of Br2 is taken as 1/2 . It's a reversible reaction. Please explain in detail. While H2 rate is taken as 1 why?

  44. chemistry

    equilibrium constant = 2.180 x 10^6 @ 730 C. H2 (g) + Br (g) 2HBr (g) (reversible) startin with 3.20 moles of HBr in a 21.3-L reaction vessel, calculate the concentrations of H2, Br2, and HBr at equilibrium idk how to start my ice table

  45. Chemistry

    I want to have the details of the experiment title: Determine the equilibrium constant of a reversible reaction involving the iodine and the tri iodate ion reaction and also determine the gibbs free energy of the reaction.

  46. chemistry

    Write both Kc and kp for the following reversible reactions: (wdp pg. 738) 2SO2(g) + O2(g) ↔ 2SO3(g) 2NH3(g) + H2SO4(l) ↔ (NH4)2SO4(s) S(s) + H2SO3(aq) ↔ H2S2O3(aq)

  47. Chemistry

    Is cutting a tree reversible? Several things come to mind, maybe not the same tree will grow back or not. Pls help. Thanks much. Cutting a large tree DOWN, as in severing the trunk, surely is not reversible. We can't cut the tree down, then glue it back

  48. physical chemistry

    In an experiment, at a total pressure of 10atm and 400 degree celcius, the equilibrium mixture 2NH3=N2+3H2 the ammonia was found to have dissociated to the extent of 96%. Calculated Kp for the rxn. (reversible rxn).

  49. Chemistry

    Construct a cycle with the following steps: Begin with: 1 mol ideal monatomic gas at 300 K and 1 bar. Point A. 1. Isothermal reversible expansion till volume gets twice its original value. Point B. then, 2. Irreversible adiabatic expansion against

  50. Chemistry

    Is dissolving salt in water an example of reversible? I don't think so because once salt is in water, the water is not clear anymore. Pls help. thanks. Yes, it is reversible. One ca physically separate the salt and water (evaporation) What do you mean by

  51. Thermodynamic

    One mole of CO2 is to be compressed adiabatically from 1 bar and 25 C. Because of irreversibilities and poor design of the compressor the compressor work required is found to be 25 %greater than that for a well-designed (reversible) compressor. Compute the

  52. chemistry

    2NO (g) + Cl2 (g) 2NOCl (g) (reversible) equilibrium constat = 1 x 10^7 @ certain temp NO = 2.8 x 10^-2 mol Cl2 = 1.4 x 10^-3 mol NOCl = 5.9 mol all mixed in a 1.4 L flask what is Qc and what direction will system go?

  53. Thermodynamics

    Consider air as an ideal gas with Cp=1000 J/(kg.K), R=287 J/(kg.K) and γ≈1.4. It is compressed from 1 bar, 300K to 10 bar using a compressor. The compressor can be considered adiabatic but not reversible. The flow rate is 2 kg/s, and the entropy

  54. Chemistry

    Can someone check my answers for the following questions...btw HAPPY HOLIDAYS TO EVERY AT JISKHA! 1)As the magnitude of Keq increases, the amount of product formed in a reversible reaction: REMAINS CONSTANT 2)The Keq of reacion 4 x 10-7. At equilibrium:

  55. science..

    Define ‘Change in entropy’ and define ‘Clausius inequality’ for irreversible and reversible process. Ple help me

  56. Geometry

    1) What are the converse, inverse, and contrapositive of the statement? Which statements are true? If the figure is a rectangle with sides 2 cm and 3 cm, then it has a perimeter of 10cm. My A: the statement is not true. 2) What are the hypothesis and the

  57. Science

    is apple to apple juice reversible or irreversible?

  58. Microbiology

    The diploid character of eukaryotic cells may mask the appearance of mutation since: A. this may be a frame shift B. the mutation is often reversible C. the mutation may be palindromic D. the matching chromosome may carry the dominant gene. Please help.

  59. Physics

    A reversible engine converts 1/6 of the heat input into work. When the temperature of the sink is reduced by 62C, the efficiency of the engine is doubled.What are the temperarure of the source and sink?

  60. chemistry

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  61. physics

    While the pressure remains constant at 689.5 kpaa the volume of a system of air changes from 0.567 m3 to 0.2283 m3. Determine (a) ΔU, (b) ΔH, (c) Q, (d) ΔS. (e) If the process is nonflow and internally reversible, what is the work? Cp = 0.24Btu/(lbm.°

  62. Chemistry

    Dicyclopentadiene was cracked by distillation to form cyclopentadiene. This is because cyclopentadiene is very reactive, so it can react with itself at room temperature in a Diels-alder reaction and reforms dicyclopentadiene (reversible reaction). is this

  63. Chemistry

    For a reversible reaction where A + B (both arrows) C + D, the equilibrium constant is represented by kc = 5.3 = (c)(d)/(A)[B]. Initially A and B are present at 2.00 M each. What is the final concentration of A once equilibrium is reached. I made an ICE

  64. Thermo

    In an isothermal reaction (either reversible or irreversible), DELTA T is constant..hence zero since temperature remains constant, can we also assume that heat is also zero? if so, how then is an isothermal reaction different from an Adiabatic one?

  65. chemistry

    all reversible reactions Kp= 3.5 X 10^4 temp: 1495K N2(g)+3H2(g) reversible 2NH3(g) 1/2N2(g) + 3/2H2(g) reversible NH3(g) what is the value of K at the temp. what is the process for this? please be detailed.

  66. physics

    Given circuits for f and f−1, we can create classical reversible circuits Rf, R−1f, Rf−1, R−1f−1 which are shown in the following figure. (Assume that f is a bijection.)In what sequence shall we apply the above circuits in order to implement a

  67. chem

    Express the second law of thermodynamics as a mathematical equation. (Select all that apply.) For a reversible process, ÄSuniverse = 0. For a spontaneous process, ÄSuniverse > 0. For a spontaneous process, ÄSuniverse = 0. For a reversible process,

  68. HARD CHEM QUESTION

    A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation: 2H2S(g) 2H2(g) + S2(g) If the equilibrium constant is 0.000 004 200 at 1103 K find: the reaction quotient initially.

  69. Hearing Loss/Causes

    Is damage to your inner ear reversible?

  70. chemistry

    Why reversible reaction never complete

  71. Critical thinking

    What are the strengths and weaknesses of reversible decision-making?

  72. Chemistry

    How flour(mixed with water) is an example of liophilic sols.I mean how it can be reversible?

  73. Chemistry

    Using your knowledge of equilibrium constants, calculate the value of K1 given the following equations: 2A+B ---> C K1=x 2B ----> D K2=5.00 2C -----> 4A+D K=0.0588 The arrows are reversible

  74. biology

    Describe the correlation between functional groups and the reversible processes of Dehydration Synthesis and Hydrolysis.

  75. Chem

    Please tell me if these are right. 1.According to Le Chatelier’s principle, what is the effect on the products when N2 is added to the equilibrium mixture of each of the following reactions? a. 2NH3(g) < = > 3H2(g) + N2(g) B. N2(g) + O2(g) 2NO(g) C.

  76. chemistry

    for a reversible reaction if the concentration of reactant are doubled aad a definate tempreture then equilibrium constant will

  77. Chemistry

    Calculate Activation Energy, Ea, for each of the reactions, above? ln(k)= -2.24x10^4(1/T)-1.8. The reactions are Step 1: 2H2 + N2 -> N2H4, Step 2: N2H4 + H2 -> 2NH3, Overall: 3H2 + N2 -> NH3. This is all the information i have. i Don't know how to solve

  78. ap chemistry

    A sample of gas in a cylinder of volume 4.09 L at 289 K and 3.43 atm expands to 7.73 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work

  79. Chemistry

    In a reversible reaction PCl5 ↔ PCl3 + Cl2, the value of K is 2.5. What will the partial pressure of Cl2 be?

  80. chemistry

    equilibrium constant = 55.3 @ certain temperature H2 (g) + I2 (g) 2HI (g) (reversible) If you start with 0.195 M hydrogen iodide, what will the concentrations of H2, I2, and HI be at equilibrium?

  81. chemistry

    At a given temperature, for a reversible reaction , if the concentration of reactants is doubled then the equilibrium costant will (a) be doubled (b) be halved (c) change to 1/3 (d) remaine same

  82. Chemistry

    Consider a mole of gas obeying the equation of state P⋅V = n⋅R⋅T + n⋅B(T)⋅P. Find w, q, ΔU, ΔS, ΔH, ΔA, and ΔG for a reversible isothermal expansion of this gas. Express your answers in terms of initial and final pressures, T, B, and

  83. Chemistry

    2NO(g) + H2(g) --> N2O(g) + H2O(g) + energy. 1. Assume the reaction is reversible and at equilibrium. What shifts in the equilibrium of this reaction are suggested by Le Chateliers Principle?

  84. Chemistry

    Based on the chemical reaction: N2(g) + 3H2(g) → 2NH3(g), which substance takes up the most space? a) 2NH3(g) b) 3H2(g) c) All of the substances have the same volume d) N2(g)

  85. Chemistry

    The following standard free energies are given for 25 degrees celcius. 1) N2(g) + 3H2(g)-> 2NH3(g) delta g = -33.0 kJ 2) 4NH3(g) + 5O2(g)-> 4NO(g) + 6H20() delta g = -1010.5 kJ 3) N2(g) + o2(g)-> 2NO(g) delta g = 173.1kJ 4) N2(g) + 2O2(g) -> 2NO2(g) delta

  86. Physical Chemistry

    Take 3.00 mol of an ideal gas at Pi=25.0 bar, Vi=4.50L, and expand it isothermally. Calculate the work done in two different processes. a. Reversible expansion at Pf=4.50 bar b. Irreversible expansion at Pext=4.50 bar

  87. physics

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  88. Chemistry

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  89. Physique

    A container closed by a movable piston contains 24 g of helium(monatic ideal gas) under the conditions (p1, v1) we operate an adiabatique reversible compression making the gas under the conditions(p2, v2) Knowing that p1=11bar v1=20L and P2 = 33 bar

  90. College Chemistry

    Now the reaction (2NO+2H2==> 2H20+N2) is believed to take place in three steps, the first of which is the fast reversible dimerization of NO to form N2O2, and the last of which (again fast) is the reaction N20 + H2 --> N2 + H2O. So, what is the slow

  91. chemistry

    Hi I was wondering if this equation is reversible and be written lime this: NaNO3 + H2O ⇋ NaOH + HNO3 Thanks!

  92. Intermediate accounting

    During 2011, Deluxe Leather goods sold 800,000 reversible belts under a new

  93. Chemistry

    A sample of gas in a cylinder of volume 3.78 L at 318 K and 3.3 atm expands to 6.76 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work for Path A. Answer in units of J

  94. Chemistry

    I am in an AP high school course and the teacher pulled a fast one on us by asking us what happens to K in an reversible equilibrium equation if the equation is flipped. K equations I am talking about go K=(Products)/(Reactants). The options were they take

  95. AP Chemistry !

    Can you help me with this? If you can, do it as detail as you can. If not, you can just give me the answer, i'll try to figure how you did it :| A sample of gas in a cylinder of volume 3.96 L at 327 K and 3.28 atm expands to 7.34 L by two different

  96. Math

    is the definition of a straight angle see below reversible? if yes, write as a true biconditional. A straight angle is an angle that measures 180 degrees. I’m stuck. Can someone help me?

  97. SchoolCraft

    A gas sample undergoes a reversible isothermal expansion. The figure gives the change ΔS in entropy of the gas versus the final volume Vf of the gas. The scale of the vertical axis is set by ΔSs = 68.4 J/K. How many moles are in the sample?

  98. thermo

    Consider a cylinder containing air at 1200 kPa and 350 C and then, the air is expanded to 140 kPa with a reversible adiabatic process. Calculate the speci c work (kJ=Kg) done by the gas. Assume calorically perfect gas

  99. thermo

    Consider a cylinder containing air at 1200 kPa and 350 C and then, the air is expanded to 140 kPa with a reversible adiabatic process. Calculate the speci c work (kJ=Kg) done by the gas. Assume calorically perfect gas.

  100. Thermodynamics

    5 pounds of an ideal gas with R=38.7 and K=1.668 have 300Btu of heat added during a reversible constant pressure change of state, initial temperature=80°F. Determine: a.)the final temperature b.)change of internal energy change of enthalpy change of

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