Show how a molecule of C2F2Cl2 can destroy two molecules of ...

[rl]

Show how a molecule of C2F2Cl2 can destroy two molecules of ozone, O3.
 
  What will be an ideal response?

Question 2

10 g of nitrogen is reacted with 5.0 g of hydrogen to produce ammonia according to the chemical equation shown below. Which one of the following statements is false? N2(g) + 3 H2(g)  2 NH3(g)
 
  A) 2.8 grams of hydrogen are left over.
  B) Hydrogen is the excess reactant.
  C) Nitrogen is the limiting reactant.
  D) The theoretical yield of ammonia is 15 g.

Question 3

In which of the following aqueous solutions does the weak acid exhibit the highest percentage ionization?
 
  A) 0.01 M H2SO3 (Ka = 1.4  10-2)
  B) 0.01 M HCN (Ka = 6.2  10-10)
  C) 0.01 M H2CO3 (Ka = 4.5  10-7)
  D) 0.01 M HC3H5O2 (Ka = 1.3  10-5)
  E) 0.01 M HOCl (Ka = 3.5  10-8)

[batool]

Answer to Question 1

CF2Cl2 (g) + h  CF2Cl (g) + Cl (g)
Cl (g) + O3 (g)  ClO (g) + O2 (g)
ClO (g) + h  Cl (g) + O (g)
Cl (g) + O3 (g)  ClO (g) + O2 (g)
----------------------------------------------------------------------------------------
C2F2Cl2 (g) + 2 O3 (g)  C2F2Cl (g) + ClO (g) + 2 O2 (g) + O (g)

Answer to Question 2

D

Answer to Question 3

A

[rl]

Excellent

[brbarasa]

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