The formation and decomposition of ozone in the stratosphere

Assignment Help Chemistry

Reference no: EM13298681

The 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. 1) ClO (g) + O3 (gO -----> Cl (g) + 2O2 (g) ?H rxn = -122.8 kJ 2) 2O3 (g) ------> 3O2 (g) ?Hrxn= -285.3 kJ 3) O3(g) + Cl (g) ---------> ClO(g) + O2 (g) ?Hrxn = ? Find the missing ?Hrxn for reaction 3

Reference no: EM13298681

Questions Cloud

At what price should the preferred stock sell for : Department 65 has an issue of preferred stock that pays a dividend of $4.00. The preferred stockholders require a rate of return on this stock of 9%. At what price should the preferred stock sell for? Round off to the nearest $0.10.

Compute employers payroll taxes : Recording the deposit of social security, Medicare, and income taxed - Compute employers payroll taxes

Determine the expected speed of prototype to ensure numbers : A model of a submarine, at 1:15 scale, is to be tested at 0.8 ft/s in a wind tunnel at standard at mospheric pressure, while the prototype will be operated in seawater. Both the air and water are at 10 C (50 F).

What is the cash flow at the end of the 4th year : John Keene recently invested $2,566.70 in a project that is promising to return 12 percent per year. The cash flows are expected to be as follows.

The formation and decomposition of ozone in the stratosphere : The 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere

Compute the precession rate : A certain gyroscope consists of uniform disk with a 50 cm radius mounted at the center of an axle that is 11 cm long and of negligible mass. what is the precession rate

What is the value of the option to wait : I the company waits one year, there is a 60% probability that the contract price will generate an aftertax cash flow of $500 per ounce and a 40% probability that the aftertax cash flow will be $410 per ounce. What is the value of the option to wai..

What human rights issues did you identify : What is the current Human Rights situation in Romania? You may want to focus on a particular group within a country. For example, are there violations of children's rights in Romania? What Human Rights issues did you identify?

Journalize the entries in march : The fund was replenished on March 15 when the fund contained $3 in cash. On March 20, the amount in the fund was increased to $150 - Journalize the entries in March that pertain to the operation of the petty cash fund.

User Account

All Pages