Describe the impacts that ocean acidification will have on Maryland citizens.

In Module #4, we discussed the role of chlorofluorocarbons (CFCs) in catalyzing the destruction of O3 in the stratosphere. One example of a CFC that is known to exasperate formation of the hole in the O3 layer is dichlorodifluoromethane (CF2Cl2). In the year 2000, this chemical reached its peak concentration of 2.2 x 10-11 M in the atmosphere. The destruction of CF2Cl2 can be approximated as a first-order process and the 1996 treaty on CFC emissions has eliminated its release into the atmosphere. Given that the rate constant for destruction of CF2Cl2 in the atmosphere is 0.009 yr-1, how long will it take for the concentration of CF2Cl2 to decline to 0.22 x 10-11 M?

The amino acid asparagine has ionization constants Kal = 6.92 x 10-3 and K ₁2 = 6.92 x 10-3 and K₁2 = 1.86 x 10-9, which correspond to the carboxylic acid group and the amino group respectively. Calculate the pH of a 0.170 M asparagine (HN) solution. pH =

Aqueous acetic acidic is neutralized by aqueous barium hydroxide. Write the balanced chemical equation.

The pH scale was designed to make it convenient to express hydrogen ion concentrations that are small in aqueous solutions. The definiton of pH is in terms of base 10 logarithms. pH = − log [H+] where [+] is the hydrogen ion concentration. a. If the hydrogen ion concentration in a solution is 4.92 × 10-³ mol/L, the pH is b. If the pH of a solution is 3.078, the hydrogen ion concentration is mol/L.

Organic molecules often have polar covalent bonds. How does this provide opportunities for chemical reactions to occur at a specific site in a molecule? How could competitive reactions be controlled by adjusting the acidity/basicity of the chemical system?

Calculate the pH of the solution in which 0.2M NH4Cl and 0.1M NH3 are present. The pKb of ammonia solution is 4.75.

What three strategies that can be used to protect coral reefs from ocean acidification?

Write the chemical formual of acid: Cl-(aq0+HS04-(aq)  HCI(AQ+SO42-(aq)

A solution containing 12.6 grams sodium hydrogen phosphate and 15.7 grams of sodium phosphate. find the pH of the solution.