What chemical process is happening at the anode of a fuel cell, ...

[Charlie]

What chemical process is happening at the anode of a fuel cell, which uses the following reaction to generate electricity?
 
  2H2 + O2  2H2O
  A) Hydrogen is being oxidized.
  B) Oxygen is being oxidized.
  C) Nothing at all is happening there.
  D) Oxygen is being reduced.

Question 2

37Ar + -1e  ________
 
  Fill in the blank(s) with correct word

Question 3

A fuel cell is essentially a battery which uses the following reaction to produce electricity. What is happening at the cathode of such a fuel cell?
 
  2H2 + O2  2H2O
  A) Hydrogen is being oxidized.
  B) Oxygen is being oxidized.
  C) Nothing at all is happening there.
  D) Oxygen is being reduced.

Question 4

Identify the oxidation-reduction equation.
 
  A) NaOH + HCl  NaCl + H2O
  B) AgNO3 + NaCl  AgCl + NaNO3
  C) CH4 + 2 O2  CO2 + 2 H2O
  D) CaO + CO2  CaCO3

Question 5

The pH = -logH+ for a solution. The pOH = -logOH- for a solution. The pH and pOH are related, and their sum is equal to 14 (pH + pOH = 14). If the concentration of a dilute solution of potassium hydroxide is 0.
 
  001 M, what is the pH of that solution? A) 7
  B) 3
  C) 11
  D) 2

Question 6

137Nd  24Mg + ________
 
  Fill in the blank(s) with correct word

Question 7

Identify the weakly basic solution.
 
  A) urine
  B) milk of magnesia
  C) saliva
  D) milk

[daiying98]

Answer to Question 1

A

Answer to Question 2

37Cl

Answer to Question 3

D

Answer to Question 4

C

Answer to Question 5

C

Answer to Question 6

113Cd

Answer to Question 7

B

[Charlie]

Gracias!

[diana chang]

Excellent