In: Chemistry
Which of the following is the definition of a buffer?
| A. | 
 an organic compound which is only soluble in an organic solvent  | 
|
| B. | 
 a substance that catalyzes a reaction  | 
|
| C. | 
 a solution containing a strong acid and its conjugate base  | 
|
| D. | 
 a solution containing a weak base and its conjugate acid  | 
|
| E. | 
 a solution containing a strong base and its conjugate acid  | 
a solution containing a weak base and its conjugate acid
option D is correct
Buffer = (weak acid + its conjugate base) or (weak baase +its conjugate acid )