The following pictures represent solutions that contain a weak acid HA (pK a = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent A - ions.(K + ,H 3 O + ,OH - ,and solvent H 2 O molecules have been omitted for clarity. )
-Which of these solutions are buffers?
A)(1)and (2)
B)(1)and (3)
C)(1), (2)and (3)
D)All are buffer solutions.

Question

The following pictures represent solutions that contain a weak acid HA (pK a = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent A - ions.(K + ,H 3 O + ,OH - ,and solvent H 2 O molecules have been omitted for clarity. ) 
-Which of these solutions are buffers?
A)(1)and (2) 
B)(1)and (3) 
C)(1), (2)and (3) 
D)All are buffer solutions.

Quizplus · Accepted Answer

The Answer of The following pictures represent solutions that contain a weak acid HA (pK a = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent A - ions.(K + ,H 3 O + ,OH - ,and solvent H 2 O molecules have been omitted for clarity. ) 
-Which of these solutions are buffers?
A)(1)and (2) 
B)(1)and (3) 
C)(1), (2)and (3) 
D)All are buffer solutions.

The Following Pictures Represent Solutions That Contain a Weak Acid