Calculate Ke for the following (equilibrium concentrations given below substances)

1, Calculate Ke for the following (equilibrium concentrations given below substances) a) H2 (g) + Br2 (g) ↔ 2 HBr (g) + heat [0.513] [0.62] [0.346] b) N2O4 (g) + heat ↔ 2 NO2 (g) [0.0325] [0.022] c) NH4SH (g) ↔ NH3 (g) + H2S (g) + heat [0.027] [0.0234] [0.209] 2. For all three of the equili ...continues

Predict and explain why the entropy change for each of the following is negative, positive, or zero.

Predict and explain why the entropy change for each of the following is negative, positive, or zero. a. Ag + (aq) + Cl - (aq) -> AgCl (s) b. Evaporating a beaker of ethanol at room temperature. c. H2 + Br2 -> 2HBr(g) d. Cooling nitrogen from 80 C to 20 C. e. Compressing a mole of Oxygen gas from 22 L to ...continues

Predict whether the following reaction would proceed spontaneously as written at 298 K by calculating both Delta G and e for the reaction, given that [Co2+] =.15 M and [Fe2+]= 0.68 M. ( E1/2= -0.282 for Co2+ + 2e- -----> Co0)

Predict whether the following reaction would proceed spontaneously as written at 298 K by calculating both Delta G and e for the reaction, given that [Co2+] =.15 M and [Fe2+]= 0.68 M. ( E1/2= -0.282 for Co2+ + 2e- -----> Co0) Co0 + Fe2+ ---> Co2+ + Fe0 A current of 0.452 A is passed through an ele ...continues

The Standard free energy change for the following reaction is -33.2 kJ/mol and the equilibrium constant Kp=6.59x105 at 25 C.

1. The Standard free energy change for the following reaction is -33.2 kJ/mol and the equilibrium constant Kp=6.59x105 at 25 C. N2(g) + 3H2 (g) <- -> 2NH3 (g) In a certain experiment, the initial pressures are P(H2)=0.25 atm, P(N2)= 0.87 atm and P(NH3)=12.9 atm. Calculate Delta G for the reaction at these pressures and pre ...continues

At two different temperatures, the reaction A B is allowed to reach equilibrium and Delta H is measure.

1. At two different temperatures, the reaction A B is allowed to reach equilibrium and Delta H is measure. Delta H =10.9 kJ/mol for this reaction at 5.5 C and Delta H=31.0 kJ/mol at 80.1 C. Calculate Delta S for this reaction at each of these two temperatures. (Hint Delta G = 0 at equilibrium).

Knowing that the specific heat capacity of three metals in Joules per gram-degree C, is 0.45 for Fe, 0.24 for Ag and 0.13 for Au. do these metals agree with the Law of DuLong and Petit?

The law of DuLong and Petit states that heat capacity per mole of many metals is approximately 6.0 calories per mole-degree C. Knowing that the specific heat capacity of three metals in Joules per gram-degree C, is 0.45 for Fe, 0.24 for Ag and 0.13 for Au. do these metals agree with the Law of DuLong and Petit? How do you know t ...continues

Chemistry Questions

1. Which of these has the lowest concentration of hydrogen ions: 0.1 M HCL 0.1 M NaOH 0.1 M H2S04 pure water. Explain your answer 2. One reagent bottle on the shelf in a laboratory is labelled 12 M H2SO4 and another is labelled 12 M HCL A. How does the number of moles of H2S04 in 100 ml of 12 MH2SO4 solution comp ...continues

Chemistry Questions

3. Bottled water consumption was reported to be 21 gal per person in the United States in 2002. The last census reported 2.9 x 10^8 people in the US a. What is the total estimated bottled water consumption in the US I8f the per capita consumption of bottled water has increased 20% in the last ten years. What was the per cap ...continues

Chemistry Questions

6. Assume that coal can be represented by the formula C135H96O9NS What is the percent of nitrogen by mass in this coal? If three tons of coal were burned completely, what mass of nitrogen in NO would be produced. Please show calculations. 7. This unbalanced equation represents the las step in the production of pure sil ...continues

Chemistry Questions

8. Show that for this nuclear equation, the sum of the subscripts on the left is equal to the sum of the subscripts on the right . Then show that the sum of the subscripts on the left is equal to the subscripts on the right 239 94PU + 4 2He---> {243 96 Cm} --->242 96 Cm + 1 On 9.When 4.oo g of hydrogen nuclei fuse to form he ...continues